org.apache.dubbo.common.io.UnsafeByteArrayOutputStream Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of dubbo Show documentation
Show all versions of dubbo Show documentation
The all in one project of dubbo
/*
* 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.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 {
}
}