package org.apache.maven.plugin.checkstyle.rss;

 /*

  * 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 java.io.IOException;

 import org.apache.maven.plugin.MojoExecutionException;

 import org.apache.maven.plugin.checkstyle.CheckstyleReport;

 import org.apache.maven.plugin.checkstyle.CheckstyleResults;

 import org.apache.maven.plugin.checkstyle.VelocityTemplate;

 import org.apache.maven.reporting.MavenReportException;

 import org.apache.velocity.VelocityContext;

 import org.apache.velocity.context.Context;

 import org.apache.velocity.exception.ResourceNotFoundException;

 import org.apache.velocity.exception.VelocityException;

 import org.codehaus.plexus.component.repository.exception.ComponentLookupException;

 import org.codehaus.plexus.personality.plexus.lifecycle.phase.ServiceLocator;

 import org.codehaus.plexus.personality.plexus.lifecycle.phase.Serviceable;

 import org.codehaus.plexus.util.StringUtils;

 import org.codehaus.plexus.velocity.VelocityComponent;

 import com.puppycrawl.tools.checkstyle.api.SeverityLevel;

 /**

  * @author Olivier Lamy

  * @since 2.4

  * @plexus.component role="org.apache.maven.plugin.checkstyle.rss.CheckstyleRssGenerator"

  *                   role-hint="default"

  */

 public class DefaultCheckstyleRssGenerator

     implements CheckstyleRssGenerator, Serviceable

 {

     /**

      * Velocity Component.

      */

     private VelocityComponent velocityComponent;

     /**

      * ServiceLocator used to lookup VelocityComponent

      * Fix for MCHECKSTYLE-101 to avoid VelocityComponent beeing initialized when skip=true

      */

     private ServiceLocator serviceLocator;

     /**

      * @see org.apache.maven.plugin.checkstyle.rss.CheckstyleRssGenerator#generateRSS(org.apache.maven.plugin.checkstyle.CheckstyleResults)

      */

     public void generateRSS( CheckstyleResults results, CheckstyleRssGeneratorRequest checkstyleRssGeneratorRequest )

         throws MavenReportException

     {

         if ( velocityComponent == null )

         {

             try

             {

                 velocityComponent = (VelocityComponent) serviceLocator.lookup( VelocityComponent.ROLE );

             }

             catch ( ComponentLookupException e )

             {

                 throw new MavenReportException( "Failed to setup Velocity", e );

             }

         }

         VelocityTemplate vtemplate = new VelocityTemplate( velocityComponent, CheckstyleReport.PLUGIN_RESOURCES );

         vtemplate.setLog( checkstyleRssGeneratorRequest.getLog() );

         Context context = new VelocityContext();

         context.put( "results", results );

         context.put( "project", checkstyleRssGeneratorRequest.getMavenProject() );

         context.put( "copyright", checkstyleRssGeneratorRequest.getCopyright() );

         context.put( "levelInfo", SeverityLevel.INFO );

         context.put( "levelWarning", SeverityLevel.WARNING );

         context.put( "levelError", SeverityLevel.ERROR );

         context.put( "stringutils", new StringUtils() );

         try

         {

             vtemplate.generate( checkstyleRssGeneratorRequest.getOutputDirectory().getPath() + "/checkstyle.rss", "checkstyle-rss.vm", context );

         }

         catch ( ResourceNotFoundException e )

         {

             throw new MavenReportException( "Unable to find checkstyle-rss.vm resource.", e );

         }

         catch ( MojoExecutionException e )

         {

             throw new MavenReportException( "Unable to generate checkstyle.rss.", e );

         }

         catch ( VelocityException e )

         {

             throw new MavenReportException( "Unable to generate checkstyle.rss.", e );

         }

         catch ( IOException e )

         {

             throw new MavenReportException( "Unable to generate checkstyle.rss.", e );

         }

     }

     /** {@inheritDoc} */

     public void service( ServiceLocator locator )

     {

         this.serviceLocator = locator;

     }

 }