| /* |
| * 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 com.alibaba.dubbo.common.io; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.io.UnsupportedEncodingException; |
| import java.nio.ByteBuffer; |
| |
| /** |
| * UnsafeByteArrayOutputStream. |
| */ |
| public class UnsafeByteArrayOutputStream extends OutputStream { |
| protected byte mBuffer[]; |
| |
| protected int mCount; |
| |
| public UnsafeByteArrayOutputStream() { |
| this(32); |
| } |
| |
| public UnsafeByteArrayOutputStream(int size) { |
| if (size < 0) |
| throw new IllegalArgumentException("Negative initial size: " + size); |
| mBuffer = new byte[size]; |
| } |
| |
| @Override |
| public void write(int b) { |
| int newcount = mCount + 1; |
| if (newcount > mBuffer.length) |
| mBuffer = Bytes.copyOf(mBuffer, Math.max(mBuffer.length << 1, newcount)); |
| mBuffer[mCount] = (byte) b; |
| mCount = newcount; |
| } |
| |
| @Override |
| public void write(byte b[], int off, int len) { |
| if ((off < 0) || (off > b.length) || (len < 0) || ((off + len) > b.length) || ((off + len) < 0)) |
| throw new IndexOutOfBoundsException(); |
| if (len == 0) |
| return; |
| int newcount = mCount + len; |
| if (newcount > mBuffer.length) |
| mBuffer = Bytes.copyOf(mBuffer, Math.max(mBuffer.length << 1, newcount)); |
| System.arraycopy(b, off, mBuffer, mCount, len); |
| mCount = newcount; |
| } |
| |
| public int size() { |
| return mCount; |
| } |
| |
| public void reset() { |
| mCount = 0; |
| } |
| |
| public byte[] toByteArray() { |
| return Bytes.copyOf(mBuffer, mCount); |
| } |
| |
| public ByteBuffer toByteBuffer() { |
| return ByteBuffer.wrap(mBuffer, 0, mCount); |
| } |
| |
| public void writeTo(OutputStream out) throws IOException { |
| out.write(mBuffer, 0, mCount); |
| } |
| |
| @Override |
| public String toString() { |
| return new String(mBuffer, 0, mCount); |
| } |
| |
| public String toString(String charset) throws UnsupportedEncodingException { |
| return new String(mBuffer, 0, mCount, charset); |
| } |
| |
| @Override |
| public void close() throws IOException { |
| } |
| } |