com.exactpro.sf.services.fast.ResizableRecordingInputStream Maven / Gradle / Ivy
/*******************************************************************************
* Copyright 2009-2019 Exactpro (Exactpro Systems Limited)
*
* 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 com.exactpro.sf.services.fast;
import org.openfast.ByteUtil;
import org.openfast.util.RecordingInputStream;
import java.io.IOException;
import java.io.InputStream;
public class ResizableRecordingInputStream extends RecordingInputStream {
private static final int SIZE = 1024;
private byte[] buffer = new byte[SIZE];
private int index = 0;
private InputStream in;
public ResizableRecordingInputStream(InputStream inputStream) {
super(inputStream);
in = inputStream;
}
@Override
public int read() throws IOException {
int read = in.read();
if (index == buffer.length) {
resize(2 * buffer.length);
}
buffer[index++] = (byte) read;
return read;
}
public String toString() {
return ByteUtil.convertByteArrayToBitString(buffer, index);
}
@Override
public byte[] getBuffer() {
byte[] b = new byte[index];
System.arraycopy(buffer, 0, b, 0, index);
return b;
}
@Override
public void clear() {
index = 0;
buffer = new byte[SIZE];
}
private void resize(int capacity) {
byte[] copy = new byte[capacity];
System.arraycopy(buffer, 0, copy, 0, buffer.length);
buffer = copy;
}
}