package org.apache.lucene.util;
/*
* 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.
*/
import org.apache.lucene.store.DataOutput;
/**
* A {@link DataOutput} that can be used to build a byte[].
* @lucene.internal
*/
public final class GrowableByteArrayDataOutput extends DataOutput {
/** The bytes */
public byte[] bytes;
/** The length */
public int length;
/** Create a {@link GrowableByteArrayDataOutput} with the given initial capacity. */
public GrowableByteArrayDataOutput(int cp) {
this.bytes = new byte[ArrayUtil.oversize(cp, 1)];
this.length = 0;
}
@Override
public void writeByte(byte b) {
if (length >= bytes.length) {
bytes = ArrayUtil.grow(bytes);
}
bytes[length++] = b;
}
@Override
public void writeBytes(byte[] b, int off, int len) {
final int newLength = length + len;
bytes = ArrayUtil.grow(bytes, newLength);
System.arraycopy(b, off, bytes, length, len);
length = newLength;
}
}