/*
 *  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.buildtools.maven2.plugin.javascript.jmt.archive;

import java.io.InputStream;
import java.io.IOException;
import java.util.Collections;

import org.codehaus.plexus.archiver.ArchiverException;
import org.codehaus.plexus.archiver.ArchiveFileFilter;
import org.codehaus.plexus.archiver.ArchiveFilterException;
import org.codehaus.plexus.archiver.zip.ZipUnArchiver;

/**
 * Custom archiver for javascript dependencies, packaged as "jsar" (JavaScript
 * ARchive), that are simply a jar of scripts and resources.
 * 
 * @author <a href="mailto:nicolas.deloof@gmail.com">Nicolas De Loof</a>
 * @plexus.component role="org.codehaus.plexus.archiver.UnArchiver"
 * role-hint="javascript"
 */
public class JavascriptUnArchiver
    extends ZipUnArchiver
{
    /**
     *
     */
    public JavascriptUnArchiver()
    {
        super();
    }
    
    /**
     * overwrite the super.extract() to set the default filter.
     */
    public void extract() throws ArchiverException, IOException 
    {
        setArchiveFilters( Collections.singletonList( new ArchiveFileFilter()
        {
            public boolean include( InputStream dataStream, String entryName )
                throws ArchiveFilterException
            {
                return !entryName.startsWith( "META-INF" );
            }
        } ) );
        super.extract();
    }
}