public String lookup()

in src/main/java/org/apache/commons/text/lookup/DnsStringLookup.java [80:103]

• 24 lines of code
• 7 McCabe index (conditional complexity)

    public String lookup(final String key) {
        if (key == null) {
            return null;
        }
        final String[] keys = key.trim().split("\\|");
        final int keyLen = keys.length;
        final String subKey = keys[0].trim();
        final String subValue = keyLen < 2 ? key : keys[1].trim();
        try {
            final InetAddress inetAddress = InetAddress.getByName(subValue);
            switch (subKey) {
            case InetAddressKeys.KEY_NAME:
                return inetAddress.getHostName();
            case InetAddressKeys.KEY_CANONICAL_NAME:
                return inetAddress.getCanonicalHostName();
            case InetAddressKeys.KEY_ADDRESS:
                return inetAddress.getHostAddress();
            default:
                return inetAddress.getHostAddress();
            }
        } catch (final UnknownHostException e) {
            return null;
        }
    }