| /* |
| * 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.logging.log4j.core.layout; |
| |
| import java.nio.ByteBuffer; |
| |
| /** |
| * Helper class for ByteBufferDestination implementors. |
| * |
| * @since 2.9 (see LOG4J2-1874) |
| */ |
| public final class ByteBufferDestinationHelper { |
| |
| private ByteBufferDestinationHelper() { |
| } |
| |
| /** |
| * Writes the specified data to the specified destination. Doesn't synchronize on the destination object. The helper |
| * method for {@link ByteBufferDestination#writeBytes(ByteBuffer)} implementations. |
| * |
| * @param source the data to write |
| * @param destination the {@code ByteBufferDestination} to write to |
| */ |
| public static void writeToUnsynchronized(final ByteBuffer source, final ByteBufferDestination destination) { |
| ByteBuffer destBuff = destination.getByteBuffer(); |
| while (source.remaining() > destBuff.remaining()) { |
| final int originalLimit = source.limit(); |
| source.limit(Math.min(source.limit(), source.position() + destBuff.remaining())); |
| destBuff.put(source); |
| source.limit(originalLimit); |
| destBuff = destination.drain(destBuff); |
| } |
| destBuff.put(source); |
| // No drain in the end. |
| } |
| |
| /** |
| * Writes the specified data to the specified destination. Doesn't synchronize on the destination object. The helper |
| * method for {@link ByteBufferDestination#writeBytes(byte[], int, int)} implementations. |
| * |
| * @param data the data to write |
| * @param offset where to start in the specified data array |
| * @param length the number of bytes to write |
| * @param destination the {@code ByteBufferDestination} to write to |
| */ |
| public static void writeToUnsynchronized(final byte[] data, int offset, int length, |
| final ByteBufferDestination destination) { |
| ByteBuffer buffer = destination.getByteBuffer(); |
| while (length > buffer.remaining()) { |
| final int chunk = buffer.remaining(); |
| buffer.put(data, offset, chunk); |
| offset += chunk; |
| length -= chunk; |
| buffer = destination.drain(buffer); |
| } |
| buffer.put(data, offset, length); |
| // No drain in the end. |
| } |
| } |