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.apache.maven.plugins.annotations.Component;
  import org.apache.maven.plugins.annotations.LifecyclePhase;
  import org.apache.maven.plugins.annotations.Mojo;
  import org.apache.maven.plugins.annotations.ResolutionScope;
  import org.codehaus.plexus.archiver.Archiver;
  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 1355570 2012-06-29 21:40:37Z rfscholte $
   */
  @Mojo( name = "manifest", defaultPhase = LifecyclePhase.PROCESS_RESOURCES, threadSafe = true,
         requiresDependencyResolution = ResolutionScope.RUNTIME )
  public class WarManifestMojo
      extends AbstractWarMojo
  {
      /**
       * The WAR archiver.
       */
      @Component( role = Archiver.class, hint = "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( getSession(), 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 );
          }
     }
 }