package org.codehaus.mojo.webstart.dependency.task;
   
   /*
    * 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.
   */
  
  import org.codehaus.mojo.webstart.pack200.Pack200Tool;
  import org.codehaus.mojo.webstart.dependency.JnlpDependencyConfig;
  import org.codehaus.plexus.component.annotations.Component;
  import org.codehaus.plexus.component.annotations.Requirement;
  
  import java.io.File;
  import java.io.IOException;
  
  /**
   * To unpack200 a dependency.
   * <p/>
   * http://java.sun.com/j2se/1.5.0/docs/guide/deployment/deployment-guide/pack200.html
   * we need to pack then unpack the files before signing them
   * <p/>
   * Created on 1/4/14.
   *
   * @author Tony Chemit <chemit@codelutin.com>
   * @since 1.0-beta-5
   */
  @Component( role = JnlpDependencyTask.class, hint = UnPack200Task.ROLE_HINT, instantiationStrategy = "per-lookup" )
  public class UnPack200Task
      extends AbstractJnlpTask
  {
  
      public static final String ROLE_HINT = "UnPack200Task";
  
      /**
       * All available pack200 tools.
       * <p/>
       * We use a plexus list injection instead of a direct component injection since for a jre 1.4, we will at the
       * moment have no implementation of this tool.
       */
      @Requirement( role = Pack200Tool.class )
      private Pack200Tool pack200Tool;
  
      /**
       * {@inheritDoc}
       */
      public void check( JnlpDependencyConfig config )
      {
          if ( config == null )
          {
              throw new NullPointerException( "config can't be null" );
          }
          if ( config.getArtifact() == null )
          {
              throw new NullPointerException( "config.artifact can't be null" );
          }
          if ( config.getArtifact().getFile() == null )
          {
              throw new NullPointerException( "config.artifact.file can't be null" );
          }
          if (!config.isPack200()) {
              throw new IllegalStateException( "Can't pack200 if config.isPack200 is false" );
          }
      }
  
      /**
       * {@inheritDoc}
       */
      public File execute( JnlpDependencyConfig config, File file )
          throws JnlpDependencyTaskException
      {
  
          verboseLog( config, "Unpack 200 file: " + file );
          try
          {
              File result = pack200Tool.unpackJar( file );
              getLogger().debug( "Unpacked 200 file: " + result );
              return result;
          }
          catch ( IOException e )
          {
              throw new JnlpDependencyTaskException( "Could not pack200 jars: ", e );
          }
      }
  
  }