package org.apache.maven.plugin.war;

 /*

  * 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.apache.maven.archiver.MavenArchiver;

 import org.apache.maven.artifact.DependencyResolutionRequiredException;

 import org.apache.maven.plugin.MojoExecutionException;

 import org.codehaus.plexus.archiver.jar.Manifest;

 import org.codehaus.plexus.archiver.jar.ManifestException;

 import org.codehaus.plexus.archiver.war.WarArchiver;

 import org.codehaus.plexus.util.IOUtil;

 import org.codehaus.plexus.util.WriterFactory;

 import java.io.File;

 import java.io.IOException;

 import java.io.PrintWriter;

 /**

  * Generate a manifest for this webapp. The manifest file is created in the

  * <code>warSourceDirectory</code>.

  *

  * @author Mike Perham

  * @version $Id: WarManifestMojo.java 985625 2010-08-15 08:15:16Z dennisl $

  * @goal manifest

  * @phase process-resources

  * @threadSafe

  * @requiresDependencyResolution runtime

  */

 public class WarManifestMojo

     extends AbstractWarMojo

 {

     /**

      * The WAR archiver.

      *

      * @component role="org.codehaus.plexus.archiver.Archiver" roleHint="war"

      */

     private WarArchiver warArchiver;

     /**

      * Executes this mojo on the current project.

      *

      * @throws MojoExecutionException if an error occurred while building the webapp

      */

     public void execute()

         throws MojoExecutionException

     {

         File manifestDir = new File( getWarSourceDirectory(), "META-INF" );

         if ( !manifestDir.exists() )

         {

             manifestDir.mkdirs();

         }

         File manifestFile = new File( manifestDir, "MANIFEST.MF" );

         MavenArchiver ma = new MavenArchiver();

         ma.setArchiver( warArchiver );

         ma.setOutputFile( manifestFile );

         PrintWriter printWriter = null;

         try

         {

             Manifest mf = ma.getManifest( getProject(), getArchive() );

             printWriter = new PrintWriter( WriterFactory.newWriter( manifestFile, WriterFactory.UTF_8 ) );

             mf.write( printWriter );

         }

         catch ( ManifestException e )

         {

             throw new MojoExecutionException( "Error preparing the manifest: " + e.getMessage(), e );

         }

         catch ( DependencyResolutionRequiredException e )

         {

             throw new MojoExecutionException( "Error preparing the manifest: " + e.getMessage(), e );

         }

         catch ( IOException e )

         {

             throw new MojoExecutionException( "Error preparing the manifest: " + e.getMessage(), e );

         }

         finally

         {

             IOUtil.close( printWriter );

         }

     }

 }