/**
* Copyright 2011 Adrian Stabiszewski, as@nfctools.org
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.nfctools.ndef.wkt.handover.decoder;
import org.nfctools.ndef.NdefConstants;
import org.nfctools.ndef.NdefMessageDecoder;
import org.nfctools.ndef.wkt.WellKnownRecordPayloadDecoder;
import org.nfctools.ndef.wkt.handover.records.AlternativeCarrierRecord;
import org.nfctools.ndef.wkt.handover.records.AlternativeCarrierRecord.CarrierPowerState;
import org.nfctools.ndef.wkt.records.WellKnownRecord;
/**
*
* @author Thomas Rorvik Skjolberg (skjolber@gmail.com)
*
*/
public class AlternativeCarrierRecordDecoder implements WellKnownRecordPayloadDecoder {
@Override
public WellKnownRecord decodePayload(byte[] payload, NdefMessageDecoder messageDecoder) {
AlternativeCarrierRecord alternativeCarrierRecord = new AlternativeCarrierRecord();
// cps
alternativeCarrierRecord.setCarrierPowerState(CarrierPowerState.toCarrierPowerState(payload[0]));
// carrier data reference
short carrierDataReferenceLength = (short)payload[1];
alternativeCarrierRecord.setCarrierDataReference(new String(payload, 2, carrierDataReferenceLength,
NdefConstants.DEFAULT_CHARSET));
// auxiliary data reference
short auxiliaryDataReferenceCount = (short)payload[2 + carrierDataReferenceLength];
int index = 2 + carrierDataReferenceLength + 1;
for (int i = 0; i < auxiliaryDataReferenceCount; i++) {
short auxiliaryDataReferenceLength = (short)payload[index];
alternativeCarrierRecord.addAuxiliaryDataReference(new String(payload, index + 1,
auxiliaryDataReferenceLength, NdefConstants.DEFAULT_CHARSET));
index += 1 + auxiliaryDataReferenceLength;
}
// if (index + 1 != payload.length) {
//
// throw new IllegalArgumentException("Expected reserved end byte");
// }
return alternativeCarrierRecord;
}
}