org.nfctools.snep.FragmentReader Maven / Gradle / Ivy
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/**
* Copyright 2011-2012 Adrian Stabiszewski, [email protected]
*
* 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.snep;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
public class FragmentReader {
private int fragmentCount = 0;
private long expectedLength;
private ByteArrayOutputStream out = new ByteArrayOutputStream();
public void addFragment(byte[] data) {
try {
if (out.size() == 0) {
ByteBuffer byteBuffer = ByteBuffer.wrap(data);
expectedLength = byteBuffer.getInt(2) + 6;
}
out.write(data);
fragmentCount++;
}
catch (IOException e) {
}
}
public void reset() {
out.reset();
}
public boolean isComplete() {
return out.size() == expectedLength;
}
public byte[] getCompleteMessage() {
return out.toByteArray();
}
public boolean isFirstFragment() {
return fragmentCount == 1;
}
}