/**
* Copyright 2011-2012 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.decoder;
import java.util.List;
import org.nfctools.ndef.NdefMessage;
import org.nfctools.ndef.NdefMessageDecoder;
import org.nfctools.ndef.Record;
import org.nfctools.ndef.wkt.WellKnownRecordPayloadDecoder;
import org.nfctools.ndef.wkt.records.GcActionRecord;
import org.nfctools.ndef.wkt.records.GcDataRecord;
import org.nfctools.ndef.wkt.records.GcTargetRecord;
import org.nfctools.ndef.wkt.records.GenericControlRecord;
import org.nfctools.ndef.wkt.records.WellKnownRecord;
public class GenericControlRecordDecoder implements WellKnownRecordPayloadDecoder {
@Override
public WellKnownRecord decodePayload(byte[] payload, NdefMessageDecoder messageDecoder) {
byte configurationByte = payload[0];
NdefMessage payloadNdefMessage = messageDecoder.decode(payload, 1, payload.length - 1);
GcTargetRecord target = null;
GcActionRecord action = null;
GcDataRecord data = null;
List<Record> subRecords = messageDecoder.decodeToRecords(payloadNdefMessage);
for (Record record : subRecords) {
if (record instanceof GcTargetRecord)
target = (GcTargetRecord)record;
else if (record instanceof GcActionRecord)
action = (GcActionRecord)record;
else if (record instanceof GcDataRecord)
data = (GcDataRecord)record;
else
throw new RuntimeException("unexpected record " + record.getClass().getName());
}
if (target == null)
throw new IllegalArgumentException("no target record found in generic control record");
GenericControlRecord gcr = new GenericControlRecord(target, configurationByte);
gcr.setAction(action);
gcr.setData(data);
return gcr;
}
}