/*
* 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.commons.vfs2.provider.bzip2;
//TODO: Revert to [compress]
//import org.apache.commons.compress.bzip2.CBZip2InputStream;
//import org.apache.commons.compress.bzip2.CBZip2OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.commons.vfs2.FileObject;
import org.apache.commons.vfs2.FileSystemException;
import org.apache.commons.vfs2.provider.AbstractFileName;
import org.apache.commons.vfs2.provider.compressed.CompressedFileFileObject;
import org.apache.commons.vfs2.provider.compressed.CompressedFileFileSystem;
/**
* the bzip2 file.
*
* @author <a href="http://commons.apache.org/vfs/team-list.html">Commons VFS team</a>
*/
public class Bzip2FileObject extends CompressedFileFileObject
{
protected Bzip2FileObject(AbstractFileName name, FileObject container, CompressedFileFileSystem fs)
{
super(name, container, fs);
}
@Override
protected InputStream doGetInputStream() throws Exception
{
// check file
InputStream is = getContainer().getContent().getInputStream();
return wrapInputStream(getName().getURI(), is);
}
public static InputStream wrapInputStream(final String name, final InputStream is) throws IOException
{
final int b1 = is.read();
final int b2 = is.read();
if (b1 != 'B' || b2 != 'Z')
{
throw new FileSystemException("vfs.provider.compressedFile/not-a-compressedFile-file.error", name);
}
return new CBZip2InputStream(is);
}
@Override
protected OutputStream doGetOutputStream(boolean bAppend) throws Exception
{
OutputStream os = getContainer().getContent().getOutputStream(false);
os.write('B');
os.write('Z');
return new CBZip2OutputStream(os);
}
}