/**
* 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;
import java.util.ArrayList;
import java.util.List;
import org.nfctools.ndef.auri.AbsoluteUriRecordDecoder;
import org.nfctools.ndef.empty.EmptyRecordDecoder;
import org.nfctools.ndef.ext.ExternalTypeDecoder;
import org.nfctools.ndef.ext.ExternalTypeRecordConfig;
import org.nfctools.ndef.mime.MimeRecordDecoder;
import org.nfctools.ndef.unknown.UnknownRecordDecoder;
import org.nfctools.ndef.unknown.unsupported.UnsupportedRecord;
import org.nfctools.ndef.wkt.WellKnownRecordConfig;
import org.nfctools.ndef.wkt.WellKnownRecordDecoder;
import org.nfctools.ndef.wkt.decoder.RecordDecoder;
public class NdefRecordDecoder {
private WellKnownRecordDecoder wellKnownRecordDecoder = new WellKnownRecordDecoder();
private ExternalTypeDecoder externalTypeDecoder = new ExternalTypeDecoder();
private List<RecordDecoder<? extends Record>> recordDecoders = new ArrayList<RecordDecoder<? extends Record>>();
public NdefRecordDecoder() {
recordDecoders.add(wellKnownRecordDecoder);
recordDecoders.add(new AbsoluteUriRecordDecoder());
recordDecoders.add(new MimeRecordDecoder());
recordDecoders.add(externalTypeDecoder);
recordDecoders.add(new EmptyRecordDecoder());
recordDecoders.add(new UnknownRecordDecoder());
}
public Record decode(NdefRecord ndefRecord, NdefMessageDecoder messageDecoder) {
if (ndefRecord.isChunked()) {
throw new IllegalArgumentException("Cannot decode chunked record");
}
for (RecordDecoder<? extends Record> decoder : recordDecoders) {
if (decoder.canDecode(ndefRecord))
return decoder.decodeRecord(ndefRecord, messageDecoder);
}
// NFC Data Exchange Format (NDEF) 1.0:
// An NDEF parser that receives an NDEF record with an unknown or unsupported TNF field value SHOULD treat it as 0x05 (Unknown).
// It is RECOMMENDED that an NDEF parser receiving an NDEF record of this type,
// without further context to its use, provides a mechanism for storing but not processing the payload.
return new UnsupportedRecord(ndefRecord);
}
public void registerWellKnownRecordConfig(WellKnownRecordConfig recordconfig) {
wellKnownRecordDecoder.addRecordConfig(recordconfig);
}
public void registerExternalTypeRecordConfig(ExternalTypeRecordConfig recordconfig) {
externalTypeDecoder.addRecordConfig(recordconfig);
}
}