/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2009 Jaspersoft Corporation. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* JasperReports is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with JasperReports. If not, see <http://www.gnu.org/licenses/>.
*/
package net.sf.jasperreports.engine.util;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.Reader;
import java.io.UnsupportedEncodingException;
import java.io.Writer;
import net.sf.jasperreports.engine.JRRuntimeException;
/**
* @author Teodor Danciu (teodord@users.sourceforge.net)
* @version $Id: FileBufferedZipEntry.java 2899 2009-07-21 10:02:32Z teodord $
*/
public class FileBufferedWriter extends Writer
{
private FileBufferedOutputStream fbos;
private Writer osw;
private boolean isEmpty = true;
/**
*
*/
public FileBufferedWriter()
{
fbos = new FileBufferedOutputStream();
try
{
osw = new BufferedWriter(new OutputStreamWriter(fbos, "UTF-8"));
}
catch (UnsupportedEncodingException e)
{
throw new JRRuntimeException(e);
}
}
/**
*
*/
public boolean isEmpty()
{
return isEmpty;
}
/**
*
*/
public void writeData(Writer writer)
{
Reader reader = null;
try
{
close();
reader = new InputStreamReader(fbos.getDataInputStream(), "UTF-8");
char[] chars = new char[10000];
int ln = 0;
while ((ln = reader.read(chars)) > 0)
{
writer.write(chars, 0, ln);
}
writer.flush();
}
catch(IOException e)
{
throw new JRRuntimeException(e);
}
finally
{
if (reader != null)
{
try
{
reader.close();
}
catch(IOException e)
{
}
}
}
}
public void dispose()
{
fbos.dispose();
}
public void close() throws IOException
{
osw.close();
}
public void flush() throws IOException
{
osw.flush();
}
public void write(char[] cbuf, int off, int len) throws IOException
{
if (len > 0)
{
isEmpty = false;
}
osw.write(cbuf, off, len);
}
}