XZUnArchiver.java

/*
 * Copyright 2016 Codehaus.
 *
 * Licensed 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.codehaus.plexus.archiver.xz;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import javax.annotation.Nonnull;
import org.apache.commons.compress.compressors.xz.XZCompressorInputStream;
import org.codehaus.plexus.archiver.AbstractUnArchiver;
import org.codehaus.plexus.archiver.ArchiverException;

import static org.codehaus.plexus.archiver.util.Streams.bufferedInputStream;
import static org.codehaus.plexus.archiver.util.Streams.bufferedOutputStream;
import static org.codehaus.plexus.archiver.util.Streams.copyFully;
import static org.codehaus.plexus.archiver.util.Streams.fileInputStream;
import static org.codehaus.plexus.archiver.util.Streams.fileOutputStream;

/**
 *
 * @author philip.lourandos
 */
public class XZUnArchiver extends AbstractUnArchiver 
{
    private static final String OPERATION_XZ = "xz";

    public XZUnArchiver()
    {
    }
    
    public XZUnArchiver( File source )
    {
        super( source );
    }

    @Override
    protected void execute() throws ArchiverException
    {
        if ( getSourceFile().lastModified() > getDestFile().lastModified() )
        {
            getLogger().info( "Expanding " + getSourceFile().getAbsolutePath() + " to " 
                + getDestFile().getAbsolutePath() );
            
            copyFully( getXZInputStream( bufferedInputStream( fileInputStream( getSourceFile(), OPERATION_XZ) ) ),
                    bufferedOutputStream( fileOutputStream( getDestFile(), OPERATION_XZ) ), OPERATION_XZ );
        }
    }

    public static @Nonnull XZCompressorInputStream getXZInputStream( InputStream in )
            throws ArchiverException
    {
        try 
        {
            return new XZCompressorInputStream(in);
        }
        catch (IOException ioe) 
        {
            throw new ArchiverException( "Trouble creating BZIP2 compressor, invalid file ?", ioe );
        }
    }
    
    @Override
    protected void execute(String path, File outputDirectory) throws ArchiverException {
        throw new UnsupportedOperationException("Targeted execution not supported in xz format");
        
    }
}