/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 2008 jOpenDocument, by ILM Informatique. All rights reserved.
*
* The contents of this file are subject to the terms of the GNU
* General Public License Version 3 only ("GPL").
* You may not use this file except in compliance with the License.
* You can obtain a copy of the License at http://www.gnu.org/licenses/gpl-3.0.html
* See the License for the specific language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each file.
*
*/
package org.jopendocument.util;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
public class StreamUtils {
public static final OutputStream NULL_OS = new OutputStream() {
@Override
public void write(int b) throws IOException {
// ignore
}
public void write(byte b[], int off, int len) throws IOException {
if (b == null)
throw new NullPointerException();
// ignore
}
};
/**
* Verbatim copy an entry from input to output stream.
*
* @param in the source.
* @param out the destination.
* @throws IOException if an error occurs while reading or writing.
*/
public static void copy(InputStream in, OutputStream out) throws IOException {
copy(in, out, 512 * 1024);
}
public static void copy(InputStream in, OutputStream out, final int bufferSize) throws IOException {
final byte[] buffer = new byte[bufferSize];
while (true) {
int count = in.read(buffer);
if (count == -1)
break;
out.write(buffer, 0, count);
}
}
}