Mega Code Archive
Fast BufferedOutputStream
<![CDATA[
/*
* @(#)$Id$
*
* Copyright 2006-2008 Makoto YUI
*
* 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.
*
* Contributors:
* Makoto YUI - initial implementation
*/
//package xbird.util.io;
import java.io.FilterOutputStream;
import java.io.IOException;
import java.io.OutputStream;
/**
*
* <DIV lang="en"></DIV>
* <DIV lang="ja"></DIV>
*
* @author Makoto YUI (yuin405+xbird@gmail.com)
*/
public final class FastBufferedOutputStream extends FilterOutputStream {
private byte buf[];
private int count;
public FastBufferedOutputStream(OutputStream out) {
this(out, 8192);
}
public FastBufferedOutputStream(OutputStream out, int size) {
super(out);
if(size <= 0) {
throw new IllegalArgumentException("Buffer size <= 0");
}
buf = new byte[size];
}
@Override
public void write(int b) throws IOException {
if(count >= buf.length) {
flushBuffer();
}
buf[count++] = (byte) b;
}
@Override
public void write(byte b[], int off, int len) throws IOException {
if(len >= buf.length) {
flushBuffer();
out.write(b, off, len);
return;
}
if(len > buf.length - count) {
flushBuffer();
}
System.arraycopy(b, off, buf, count, len);
count += len;
}
@Override
public synchronized void flush() throws IOException {
flushBuffer();
out.flush();
}
private void flushBuffer() throws IOException {
if(count > 0) {
out.write(buf, 0, count);
count = 0;
}
}
}
]]>