package org.apache.maven.plugins.pmd;
   
   /*
    * 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 java.util.ArrayList;
  import java.util.Collections;
  import java.util.Iterator;
  import java.util.List;
  
  import net.sourceforge.pmd.Report;
  import net.sourceforge.pmd.Report.ProcessingError;
  import net.sourceforge.pmd.RuleViolation;
  import net.sourceforge.pmd.renderers.AbstractRenderer;
  import net.sourceforge.pmd.util.datasource.DataSource;
  
  import org.codehaus.plexus.util.StringUtils;
  
  
  /**
   * A PMD renderer, that collects all violations and processing errors
   * from a pmd execution.
   * 
   * @author Andreas Dangel
   */
  public class PmdCollectingRenderer extends AbstractRenderer
  {
      private List<ProcessingError> errors = Collections.synchronizedList( new ArrayList<ProcessingError>() );
      private List<RuleViolation> violations = Collections.synchronizedList( new ArrayList<RuleViolation>() );
  
      /**
       * Collects all reports from all threads.
       */
      public PmdCollectingRenderer()
      {
          super( PmdCollectingRenderer.class.getSimpleName(), "Collects all reports from all threads" );
      }
  
      @Override
      public void renderFileReport( Report report ) throws IOException
      {
          for ( RuleViolation v : report )
          {
              violations.add( v );
          }
          for ( Iterator<ProcessingError> it = report.errors(); it.hasNext(); )
          {
              errors.add( it.next() );
          }
      }
  
      /**
       * Checks whether any violations have been found.
       * @return <code>true</code> if at least one violations has been found
       */
      public boolean hasViolations()
      {
          return !violations.isEmpty();
      }
  
      /**
       * Gets the list of all found violations.
       * @return the violations
       */
      public List<RuleViolation> getViolations()
      {
          return violations;
      }
  
      /**
       * Checks whether any processing errors have been found.
       * @return <code>true</code> if any errors have been found
       */
      public boolean hasErrors()
      {
          return !errors.isEmpty();
      }
  
      /**
       * Gets all the processing errors.
       * @return the errors
       */
     public List<ProcessingError> getErrors()
     {
         return errors;
     }
 
     /**
      * Gets the errors as a single string. Each error is in its own line.
      * @param withDetails if <code>true</code> then add the error details additionally (contains e.g. the stacktrace)
      * @return the errors as string
      */
     public String getErrorsAsString( boolean withDetails )
     {
         List<String> errorsAsString = new ArrayList<>( errors.size() );
         for ( ProcessingError error : errors )
         {
             errorsAsString.add( error.getFile() + ": " + error.getMsg() );
             if ( withDetails )
             {
                 errorsAsString.add( error.getDetail() );
             }
         }
         return StringUtils.join( errorsAsString.toArray(), System.getProperty( "line.separator" ) );
     }
 
     /**
      * Create a new single report with all violations for further rendering into other formats than HTML.
      * @return the report
      */
     public Report asReport()
     {
         Report report = new Report();
         for ( RuleViolation v : violations )
         {
             report.addRuleViolation( v );
         }
         for ( ProcessingError e : errors )
         {
             report.addError( e );
         }
         return report;
     }
 
 
     // stubs need to fulfill the Renderer interface
     @Override
     public String defaultFileExtension()
     {
         return null;
     }
     @Override
     public void start() throws IOException
     {
     }
     @Override
     public void startFileAnalysis( DataSource dataSource )
     {
     }
     @Override
     public void end() throws IOException
     {
     }
 }