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.exec.CheckstyleResults;
  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.annotations.Component;
  import org.codehaus.plexus.component.annotations.Requirement;
  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
   */
  @Component( role = CheckstyleRssGenerator.class, hint = "default" )
  public class DefaultCheckstyleRssGenerator
      implements CheckstyleRssGenerator
  {
      @Requirement
      private VelocityComponent velocityComponent;
  
      /**
       * @see org.apache.maven.plugin.checkstyle.rss.CheckstyleRssGenerator#generateRSS(org.apache.maven.plugin.checkstyle.exec.CheckstyleResults)
       */
      public void generateRSS( CheckstyleResults results, CheckstyleRssGeneratorRequest checkstyleRssGeneratorRequest )
          throws MavenReportException
      {
  
          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 );
          }
      }
      
  }