/*
* 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.vertexium.security;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
class ByteBufferUtil {
public static byte[] toBytes(ByteBuffer buffer) {
if (buffer == null)
return null;
return Arrays.copyOfRange(buffer.array(), buffer.position(), buffer.limit());
}
public static List<ByteBuffer> toByteBuffers(Collection<byte[]> bytesList) {
if (bytesList == null)
return null;
ArrayList<ByteBuffer> result = new ArrayList<ByteBuffer>();
for (byte[] bytes : bytesList) {
result.add(ByteBuffer.wrap(bytes));
}
return result;
}
public static List<byte[]> toBytesList(Collection<ByteBuffer> bytesList) {
if (bytesList == null)
return null;
ArrayList<byte[]> result = new ArrayList<byte[]>();
for (ByteBuffer bytes : bytesList) {
result.add(toBytes(bytes));
}
return result;
}
public static String toString(ByteBuffer bytes) {
return new String(bytes.array(), bytes.position(), bytes.remaining(), Constants.UTF8);
}
public static ByteBuffer toByteBuffers(ByteSequence bs) {
if (bs == null)
return null;
if (bs.isBackedByArray()) {
return ByteBuffer.wrap(bs.getBackingArray(), bs.offset(), bs.length());
} else {
// TODO create more efficient impl
return ByteBuffer.wrap(bs.toArray());
}
}
}