package org.apache.maven.plugins.checkstyle;
   
   /*
    * 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.File;
  import java.util.List;
  
  import org.apache.maven.model.Resource;
  import org.apache.maven.plugins.annotations.Mojo;
  import org.apache.maven.plugins.annotations.ResolutionScope;
  import org.apache.maven.plugins.checkstyle.exec.CheckstyleExecutorRequest;
  import org.apache.maven.project.MavenProject;
  import org.apache.maven.reporting.MavenReportException;
  
  /**
   * A reporting task that performs Checkstyle analysis and generates an HTML
   * report on any violations that Checkstyle finds.
   *
   * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>
   * @author <a href="mailto:vincent.siveton@gmail.com">Vincent Siveton</a>
   * @author <a href="mailto:joakim@erdfelt.com">Joakim Erdfelt</a>
   *
   */
  @Mojo( name = "checkstyle", requiresDependencyResolution = ResolutionScope.COMPILE, threadSafe = true )
  public class CheckstyleReport
      extends AbstractCheckstyleReport
  {
  
      /** {@inheritDoc} */
      protected MavenProject getProject()
      {
          return project;
      }
  
      /**
       * {@inheritDoc}
       */
      protected CheckstyleExecutorRequest createRequest()
              throws MavenReportException
      {
          CheckstyleExecutorRequest request = new CheckstyleExecutorRequest();
          request.setConsoleListener( getConsoleListener() ).setConsoleOutput( consoleOutput )
              .setExcludes( excludes ).setFailsOnError( failsOnError ).setIncludes( includes )
              .setResourceIncludes( resourceIncludes )
              .setResourceExcludes( resourceExcludes )
              .setIncludeResources( includeResources )
              .setIncludeTestResources( includeTestResources )
              .setIncludeTestSourceDirectory( includeTestSourceDirectory ).setListener( getListener() )
              .setProject( project ).setSourceDirectories( getSourceDirectories() )
              .setResources( resources )
              .setStringOutputStream( stringOutputStream ).setSuppressionsLocation( suppressionsLocation )
              .setTestSourceDirectories( getTestSourceDirectories() )
              .setPropertyExpansion( propertyExpansion ).setHeaderLocation( headerLocation )
              .setCacheFile( cacheFile ).setSuppressionsFileExpression( suppressionsFileExpression )
              .setEncoding( getInputEncoding() ).setPropertiesLocation( propertiesLocation );
          return request;
      }
  
      /** {@inheritDoc} */
      public String getOutputName()
      {
          return "checkstyle";
      }
  
      /** {@inheritDoc} */
      public boolean canGenerateReport()
      {
          if ( skip )
          {
              return false;
          }
  
          // TODO: would be good to scan the files here
          for ( File sourceDirectory : getSourceDirectories() )
          {
              if ( sourceDirectory.exists() )
              {
                  return true;
              }
          }
  
          if ( includeTestSourceDirectory )
         {
             for ( File testSourceDirectory : getTestSourceDirectories() )
             {
                 if ( testSourceDirectory.exists() )
                 {
                     return true;
                 }
             }
         }
 
         return ( ( includeResources && hasResources( resources ) )
             || ( includeTestResources && hasResources( testResources ) )
         );
     }
 
     /**
      * Check if any of the resources exist.
      * @param resources The resources to check
      * @return <code>true</code> if the resource directory exist
      */
     private boolean hasResources( List<Resource> resources )
     {
         for ( Resource resource : resources )
         {
             if ( new File( resource.getDirectory() ).exists() )
             {
                 return true;
             }
         }
       return false;
     }
 
 }