/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.myfaces.util.zip;
import org.apache.commons.codec.binary.Base64;
import java.io.*;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;
/**
* DOCUMENT ME!
* @author Manfred Geiler (latest modification by $Author: grantsmith $)
* @version $Revision: 472618 $ $Date: 2006-11-08 21:06:54 +0100 (Mi, 08 Nov 2006) $
*
* Revision 1.7 2004/04/09 21:13:10 Sylvain Vieujot
* Replace oreilly's Base64 encoder and decoder with Jakarta Commons Codec
*/
public class ZipUtils
{
public static final String ZIP_CHARSET = "ISO-8859-1";
private ZipUtils()
{
// hide from public access
}
/**
*/
public static String unzipString(String s)
{
try
{
Base64 base64Codec = new Base64();
ByteArrayInputStream decodedStream = new ByteArrayInputStream( base64Codec.decode( s.getBytes(ZIP_CHARSET) ) );
InputStream unzippedStream = new GZIPInputStream(decodedStream);
StringBuffer buf = new StringBuffer();
int c;
while ((c = unzippedStream.read()) != -1)
{
buf.append((char)c);
}
unzippedStream.close();
decodedStream.close();
return buf.toString();
}
catch (IOException e)
{
throw new RuntimeException(e);
}
}
/**
*/
public static String zipString(String s)
{
try
{
ByteArrayOutputStream baos = new ByteArrayOutputStream();
OutputStream zos = new GZIPOutputStream(baos);
OutputStreamWriter writer = new OutputStreamWriter(zos, ZIP_CHARSET);
writer.write(s);
writer.close();
zos.close();
baos.close();
Base64 base64Codec = new Base64();
return new String(base64Codec.encode( baos.toByteArray() ), ZIP_CHARSET);
}
catch (IOException e)
{
throw new RuntimeException(e);
}
}
}