/**
* 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.io.EOFException;
import java.io.IOException;
import java.io.InputStream;
import org.nfctools.ndef.wkt.records.Action;
import org.nfctools.ndef.wkt.records.GcActionRecord;
import org.nfctools.ndef.wkt.records.GcDataRecord;
import org.nfctools.ndef.wkt.records.GenericControlRecord;
import org.nfctools.ndef.wkt.records.TextRecord;
import org.nfctools.ndef.wkt.records.UriRecord;
public class RecordUtils {
public static boolean equalsTarget(GenericControlRecord gcRecord, String targetNameOrUri) {
if (gcRecord.getTarget().getTargetIdentifier() instanceof TextRecord) {
return targetNameOrUri.equals(((TextRecord)gcRecord.getTarget().getTargetIdentifier()).getText());
}
else if (gcRecord.getTarget().getTargetIdentifier() instanceof UriRecord) {
return targetNameOrUri.equals(((UriRecord)gcRecord.getTarget().getTargetIdentifier()).getUri());
}
else
return false;
}
public static boolean equalsAction(GenericControlRecord gcRecord, String actionName) {
GcActionRecord actionRecord = gcRecord.getAction();
if (actionRecord.hasActionRecord() && actionRecord.getActionRecord() instanceof TextRecord) {
return actionName.equals(((TextRecord)actionRecord.getActionRecord()).getText());
}
else
return false;
}
public static boolean equalsAction(GenericControlRecord gcRecord, Action action) {
GcActionRecord actionRecord = gcRecord.getAction();
return (actionRecord.hasAction() && actionRecord.getAction().equals(action));
}
public static boolean hasRecordByKey(GcDataRecord dataRecord, String key) {
for (Record record : dataRecord.getRecords()) {
if (key.equals(record.getKey()))
return true;
}
return false;
}
@SuppressWarnings("unchecked")
public static <T extends Record> T getRecordByKey(GcDataRecord dataRecord, String key) {
for (Record record : dataRecord.getRecords()) {
if (key.equals(record.getKey()))
return (T)record;
}
throw new IllegalArgumentException("record with the given key not found");
}
public static boolean isEqualArray(byte[] b1, byte[] b2) {
if (b1.length != b2.length)
return false;
for (int i = 0; i < b1.length; i++) {
if (b1[i] != b2[i])
return false;
}
return true;
}
public static byte[] getBytesFromStream(int length, InputStream bais) {
try {
byte[] bytes = new byte[length];
bais.read(bytes, 0, bytes.length);
return bytes;
}
catch (IOException e) {
throw new RuntimeException(e);
}
}
public static int readUnsignedShort(InputStream in) throws IOException {
int ch1 = in.read();
int ch2 = in.read();
if ((ch1 | ch2) < 0) {
throw new EOFException();
}
return (short)((ch1 << 8) + (ch2 << 0));
}
public static byte[] readByteArray(InputStream in, int len) throws IOException {
byte[] buffer = new byte[len];
int n = 0;
while (n < len) {
int count = in.read(buffer, n, len - n);
if (count < 0)
throw new EOFException();
n += count;
}
return buffer;
}
}