| /* |
| * 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.tuweni.bytes; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| import static com.google.common.base.Preconditions.checkElementIndex; |
| |
| import io.netty.buffer.ByteBuf; |
| import io.vertx.core.buffer.Buffer; |
| |
| class ByteBufWrappingBytes extends AbstractBytes { |
| |
| protected final ByteBuf byteBuf; |
| |
| ByteBufWrappingBytes(ByteBuf byteBuf) { |
| this.byteBuf = byteBuf; |
| } |
| |
| ByteBufWrappingBytes(ByteBuf byteBuf, int offset, int length) { |
| checkArgument(length >= 0, "Invalid negative length"); |
| int bufferLength = byteBuf.capacity(); |
| checkElementIndex(offset, bufferLength + 1); |
| checkArgument( |
| offset + length <= bufferLength, |
| "Provided length %s is too big: the buffer has size %s and has only %s bytes from %s", |
| length, |
| bufferLength, |
| bufferLength - offset, |
| offset); |
| |
| if (offset == 0 && length == bufferLength) { |
| this.byteBuf = byteBuf; |
| } else { |
| this.byteBuf = byteBuf.slice(offset, length); |
| } |
| } |
| |
| @Override |
| public int size() { |
| return byteBuf.capacity(); |
| } |
| |
| @Override |
| public byte get(int i) { |
| return byteBuf.getByte(i); |
| } |
| |
| @Override |
| public int getInt(int i) { |
| return byteBuf.getInt(i); |
| } |
| |
| @Override |
| public long getLong(int i) { |
| return byteBuf.getLong(i); |
| } |
| |
| @Override |
| public Bytes slice(int i, int length) { |
| int size = byteBuf.capacity(); |
| if (i == 0 && length == size) { |
| return this; |
| } |
| if (length == 0) { |
| return Bytes.EMPTY; |
| } |
| |
| checkElementIndex(i, size); |
| checkArgument( |
| i + length <= size, |
| "Provided length %s is too big: the value has size %s and has only %s bytes from %s", |
| length, |
| size, |
| size - i, |
| i); |
| |
| return new ByteBufWrappingBytes(byteBuf.slice(i, length)); |
| } |
| |
| // MUST be overridden by mutable implementations |
| @Override |
| public Bytes copy() { |
| return Bytes.wrap(toArray()); |
| } |
| |
| @Override |
| public MutableBytes mutableCopy() { |
| return MutableBytes.wrap(toArray()); |
| } |
| |
| @Override |
| public void appendTo(Buffer buffer) { |
| buffer.appendBuffer(Buffer.buffer(this.byteBuf)); |
| } |
| |
| @Override |
| public byte[] toArray() { |
| int size = byteBuf.capacity(); |
| byte[] array = new byte[size]; |
| byteBuf.getBytes(0, array); |
| return array; |
| } |
| } |