| /* |
| * |
| * 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.proton.amqp; |
| |
| import java.nio.ByteBuffer; |
| import java.util.Collection; |
| |
| import org.apache.qpid.proton.codec.ReadableBuffer; |
| |
| public final class Binary |
| { |
| |
| private final byte[] _data; |
| private final int _offset; |
| private final int _length; |
| private int _hashCode; |
| |
| public Binary(final byte[] data) |
| { |
| this(data, 0, data.length); |
| } |
| |
| public Binary(final byte[] data, final int offset, final int length) |
| { |
| _data = data; |
| _offset = offset; |
| _length = length; |
| } |
| |
| public ByteBuffer asByteBuffer() |
| { |
| return ByteBuffer.wrap(_data, _offset, _length); |
| } |
| |
| @Override |
| public final int hashCode() |
| { |
| int hc = _hashCode; |
| if(hc == 0) |
| { |
| for (int i = 0; i < _length; i++) |
| { |
| hc = 31*hc + (0xFF & _data[_offset + i]); |
| } |
| _hashCode = hc; |
| } |
| return hc; |
| } |
| |
| @Override |
| public final boolean equals(Object o) |
| { |
| if (this == o) |
| { |
| return true; |
| } |
| |
| if (o == null || getClass() != o.getClass()) |
| { |
| return false; |
| } |
| |
| Binary buf = (Binary) o; |
| final int size = _length; |
| if (size != buf._length) |
| { |
| return false; |
| } |
| |
| final byte[] myData = _data; |
| final byte[] theirData = buf._data; |
| int myOffset = _offset; |
| int theirOffset = buf._offset; |
| final int myLimit = myOffset + size; |
| |
| while(myOffset < myLimit) |
| { |
| if (myData[myOffset++] != theirData[theirOffset++]) |
| { |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| |
| public int getArrayOffset() |
| { |
| return _offset; |
| } |
| |
| public byte[] getArray() |
| { |
| return _data; |
| } |
| |
| public int getLength() |
| { |
| return _length; |
| } |
| |
| public String toString() |
| { |
| StringBuilder str = new StringBuilder(); |
| |
| |
| for (int i = 0; i < _length; i++) |
| { |
| byte c = _data[_offset + i]; |
| |
| if (c > 31 && c < 127 && c != '\\') |
| { |
| str.append((char)c); |
| } |
| else |
| { |
| str.append(String.format("\\x%02x", c)); |
| } |
| } |
| |
| return str.toString(); |
| |
| } |
| |
| public static Binary combine(final Collection<Binary> binaries) |
| { |
| |
| if(binaries.size() == 1) |
| { |
| return binaries.iterator().next(); |
| } |
| |
| int size = 0; |
| for(Binary binary : binaries) |
| { |
| size += binary.getLength(); |
| } |
| byte[] data = new byte[size]; |
| int offset = 0; |
| for(Binary binary : binaries) |
| { |
| System.arraycopy(binary._data, binary._offset, data, offset, binary._length); |
| offset += binary._length; |
| } |
| return new Binary(data); |
| } |
| |
| public Binary subBinary(final int offset, final int length) |
| { |
| return new Binary(_data, _offset+offset, length); |
| } |
| |
| public static Binary create(ReadableBuffer buffer) |
| { |
| if (buffer == null) |
| { |
| return null; |
| } |
| else if (!buffer.hasArray()) |
| { |
| byte data[] = new byte [buffer.remaining()]; |
| ReadableBuffer dup = buffer.duplicate(); |
| dup.get(data); |
| return new Binary(data); |
| } |
| else |
| { |
| return new Binary(buffer.array(), buffer.arrayOffset() + buffer.position(), buffer.remaining()); |
| } |
| } |
| |
| public static Binary create(ByteBuffer buffer) |
| { |
| if( buffer == null ) |
| return null; |
| if( buffer.isDirect() || buffer.isReadOnly() ) |
| { |
| byte data[] = new byte [buffer.remaining()]; |
| ByteBuffer dup = buffer.duplicate(); |
| dup.get(data); |
| return new Binary(data); |
| } |
| else |
| { |
| return new Binary(buffer.array(), buffer.arrayOffset()+buffer.position(), buffer.remaining()); |
| } |
| } |
| |
| } |