| /* |
| * |
| * 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.qpid.transport; |
| |
| import static org.apache.qpid.transport.util.Functions.str; |
| |
| import java.nio.ByteBuffer; |
| |
| |
| /** |
| * Binary |
| * |
| */ |
| |
| public final class Binary |
| { |
| |
| private byte[] bytes; |
| private int offset; |
| private int size; |
| private int hash = 0; |
| |
| public Binary(byte[] bytes, int offset, int size) |
| { |
| if (offset + size > bytes.length) |
| { |
| throw new ArrayIndexOutOfBoundsException(); |
| } |
| |
| this.bytes = bytes; |
| this.offset = offset; |
| this.size = size; |
| } |
| |
| public Binary(byte[] bytes) |
| { |
| this(bytes, 0, bytes.length); |
| } |
| |
| public final byte[] getBytes() |
| { |
| byte[] result = new byte[size]; |
| System.arraycopy(bytes, offset, result, 0, size); |
| return result; |
| } |
| |
| public final byte[] array() |
| { |
| return bytes; |
| } |
| |
| public final int offset() |
| { |
| return offset; |
| } |
| |
| public final int size() |
| { |
| return size; |
| } |
| |
| public final Binary slice(int low, int high) |
| { |
| int sz; |
| |
| if (high < 0) |
| { |
| sz = size + high; |
| } |
| else |
| { |
| sz = high - low; |
| } |
| |
| if (sz < 0) |
| { |
| sz = 0; |
| } |
| |
| return new Binary(bytes, offset + low, sz); |
| } |
| |
| public final int hashCode() |
| { |
| if (hash == 0) |
| { |
| int hc = 0; |
| for (int i = 0; i < size; i++) |
| { |
| hc = 31*hc + (0xFF & bytes[offset + i]); |
| } |
| hash = hc; |
| } |
| |
| return hash; |
| } |
| |
| public final boolean equals(Object o) |
| { |
| if (!(o instanceof Binary)) |
| { |
| return false; |
| } |
| |
| Binary buf = (Binary) o; |
| if (this.size != buf.size) |
| { |
| return false; |
| } |
| |
| for (int i = 0; i < size; i++) |
| { |
| if (bytes[offset + i] != buf.bytes[buf.offset + i]) |
| { |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| public String toString() |
| { |
| return str(ByteBuffer.wrap(bytes, offset, size)); |
| } |
| |
| public boolean hasExcessCapacity() |
| { |
| return size != bytes.length; |
| } |
| |
| public Binary copy() |
| { |
| return new Binary(getBytes()); |
| } |
| } |