/**
* Copyright (c) 2000-2005 Liferay, LLC. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
package com.liferay.util.servlet.fileupload;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import javax.servlet.ServletInputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import com.liferay.util.servlet.ByteArrayInputStreamWrapper;
import com.liferay.util.servlet.ServletInputStreamWrapper;
/**
* <a href="LiferayInputStream.java.html"><b><i>View Source</i></b></a>
*
* @author Brian Myunghun Kim
* @author Brian Wing Shun Chan
* @version $Revision: 1.2 $
*
*/
public class LiferayInputStream extends ServletInputStreamWrapper {
public LiferayInputStream(HttpServletRequest req) throws IOException {
super(req.getInputStream());
_req = req;
_ses = req.getSession();
_totalSize = req.getContentLength();
}
public int read(byte[] b, int off, int len) throws IOException {
int bytesRead = super.read(b, off, len);
if (bytesRead > 0) {
_totalRead += bytesRead;
}
else {
_totalRead = _totalSize;
}
float percent = _totalRead / _totalSize;
_log.debug(bytesRead + "/" + _totalRead + "=" + percent);
_ses.setAttribute(LiferayFileUpload.PERCENT, new Float(percent));
_cachedBytes.write(b);
return bytesRead;
}
public ServletInputStream getCachedInputStream() throws IOException {
return new ByteArrayInputStreamWrapper(
new ByteArrayInputStream(_cachedBytes.toByteArray()));
}
private static final Log _log = LogFactory.getLog(LiferayInputStream.class);
private HttpServletRequest _req;
private HttpSession _ses;
private float _totalRead;
private int _totalSize;
private ByteArrayOutputStream _cachedBytes = new ByteArrayOutputStream();
}