| /* |
| * reserved comment block |
| * DO NOT REMOVE OR ALTER! |
| */ |
| /* |
| * 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 com.sun.org.apache.xml.internal.security.utils; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| |
| /** |
| * A class that buffers writte without synchronize its methods |
| * @author raul |
| * |
| */ |
| public class UnsyncBufferedOutputStream extends OutputStream { |
| final OutputStream out; |
| |
| final byte[] buf; |
| static final int size=8*1024; |
| private static ThreadLocal bufCahce = new ThreadLocal() { |
| protected synchronized Object initialValue() { |
| return new byte[size]; |
| } |
| }; |
| int pointer=0; |
| /** |
| * Creates a buffered output stream without synchronization |
| * @param out the outputstream to buffer |
| */ |
| public UnsyncBufferedOutputStream(OutputStream out) { |
| buf=(byte[])bufCahce.get(); |
| this.out=out; |
| } |
| |
| /** @inheritDoc */ |
| public void write(byte[] arg0) throws IOException { |
| write(arg0,0,arg0.length); |
| } |
| |
| /** @inheritDoc */ |
| public void write(byte[] arg0, int arg1, int len) throws IOException { |
| int newLen=pointer+len; |
| if (newLen> size) { |
| flushBuffer(); |
| if (len>size) { |
| out.write(arg0,arg1,len); |
| return; |
| } |
| newLen=len; |
| } |
| System.arraycopy(arg0,arg1,buf,pointer,len); |
| pointer=newLen; |
| } |
| |
| private final void flushBuffer() throws IOException { |
| if (pointer>0) |
| out.write(buf,0,pointer); |
| pointer=0; |
| |
| } |
| |
| /** @inheritDoc */ |
| public void write(int arg0) throws IOException { |
| if (pointer>= size) { |
| flushBuffer(); |
| } |
| buf[pointer++]=(byte)arg0; |
| |
| } |
| |
| /** @inheritDoc */ |
| public void flush() throws IOException { |
| flushBuffer(); |
| out.flush(); |
| } |
| |
| /** @inheritDoc */ |
| public void close() throws IOException { |
| flush(); |
| } |
| |
| } |