/*
* 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;
static final int size=8*1024;
final byte[] buf=new byte[size];
int pointer=0;
/**
* Creates a buffered output stream without synchronization
* @param out the outputstream to buffer
*/
public UnsyncBufferedOutputStream(OutputStream out) {
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();
}
}