Class Code

src/main/java/core/org/xbill/DNS/EDNSOption.java:16–55

public abstract class EDNSOption {

public static class Code {
	private Code() {}

	/** Name Server Identifier, RFC 5001 */
	public final static int NSID = 3;

	/** Client Subnet, defined in draft-vandergaast-edns-client-subnet-02 */
	public final static int CLIENT_SUBNET = 8;

	private static Mnemonic codes = new Mnemonic("EDNS Option Codes",
						     Mnemonic.CASE_UPPER);

	static {
		codes.setMaximum(0xFFFF);
		codes.setPrefix("CODE");
		codes.setNumericAllowed(true);

		codes.add(NSID, "NSID");
		codes.add(CLIENT_SUBNET, "CLIENT_SUBNET");
	}

	/**
	 * Converts an EDNS Option Code into its textual representation
	 */
	public static String
	string(int code) {
		return codes.getText(code);
	}

	/**
	 * Converts a textual representation of an EDNS Option Code into its
	 * numeric value.
	 * @param s The textual representation of the option code
	 * @return The option code, or -1 on error.
	 */
	public static int
	value(String s) {
		return codes.getValue(s);
	}
}

private final int code;