/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.solr.update;
import org.apache.solr.common.util.FastOutputStream;
import java.io.IOException;
import java.util.LinkedList;
import java.util.List;
/** @lucene.internal */
public class MemOutputStream extends FastOutputStream {
public List<byte[]> buffers = new LinkedList<>();
public MemOutputStream(byte[] tempBuffer) {
super(null, tempBuffer, 0);
}
@Override
public void flush(byte[] arr, int offset, int len) throws IOException {
if (arr == buf && offset==0 && len==buf.length) {
buffers.add(buf); // steal the buffer
buf = new byte[8192];
} else if (len > 0) {
byte[] newBuf = new byte[len];
System.arraycopy(arr, offset, newBuf, 0, len);
buffers.add(newBuf);
}
}
public void writeAll(FastOutputStream fos) throws IOException {
for (byte[] buffer : buffers) {
fos.write(buffer);
}
if (pos > 0) {
fos.write(buf, 0, pos);
}
}
}