| /* |
| * Copyright 1999-2005 The Apache Software Foundation. |
| * |
| * Licensed 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.xml.security.utils; |
| |
| import java.io.OutputStream; |
| |
| /** |
| * A simple Unsynced ByteArryOutputStream |
| * @author raul |
| * |
| */ |
| public class UnsyncByteArrayOutputStream extends OutputStream { |
| private static ThreadLocal bufCahce = new ThreadLocal() { |
| protected synchronized Object initialValue() { |
| return new byte[8*1024]; |
| } |
| }; |
| byte[] buf=(byte[])bufCahce.get(); |
| int size=8*1024;//buf.length; |
| int pos=0; |
| /** @inheritDoc */ |
| public UnsyncByteArrayOutputStream() { |
| } |
| public void write(byte[] arg0) { |
| int newPos=pos+arg0.length; |
| if (newPos>size) { |
| expandSize(); |
| } |
| System.arraycopy(arg0,0,buf,pos,arg0.length); |
| pos=newPos; |
| } |
| /** @inheritDoc */ |
| public void write(byte[] arg0, int arg1, int arg2) { |
| int newPos=pos+arg2; |
| if (newPos>size) { |
| expandSize(); |
| } |
| System.arraycopy(arg0,arg1,buf,pos,arg2); |
| pos=newPos; |
| } |
| /** @inheritDoc */ |
| public void write(int arg0) { |
| if (pos>=size) { |
| expandSize(); |
| } |
| buf[pos++]=(byte)arg0; |
| } |
| /** @inheritDoc */ |
| public byte[] toByteArray() { |
| byte result[]=new byte[pos]; |
| System.arraycopy(buf,0,result,0,pos); |
| return result; |
| } |
| |
| /** @inheritDoc */ |
| public void reset() { |
| pos=0; |
| } |
| |
| /** @inheritDoc */ |
| void expandSize() { |
| int newSize=size<<2; |
| byte newBuf[]=new byte[newSize]; |
| System.arraycopy(buf,0,newBuf,0,pos); |
| buf=newBuf; |
| size=newSize; |
| |
| } |
| } |