package org.apache.maven.plugin.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.File;

 import java.util.ArrayList;

 import java.util.Collections;

 import java.util.Comparator;

 import java.util.Iterator;

 import java.util.List;

 import java.util.ResourceBundle;

 import net.sourceforge.pmd.IRuleViolation;

 import net.sourceforge.pmd.PMD;

 import net.sourceforge.pmd.ReportListener;

 import net.sourceforge.pmd.stat.Metric;

 import org.codehaus.doxia.sink.Sink;

 import org.codehaus.plexus.util.StringUtils;

 /**

  * Handle events from PMD, converting them into Doxia events.

  *

  * @author Brett Porter

  * @version $Id: PmdReportListener.java,v 1.1.1.1 2005/02/17 07:16:22 brett Exp $

  */

 public class PmdReportListener

     implements ReportListener

 {

     private Sink sink;

     private String currentFilename;

     private boolean fileInitialized;

     private ResourceBundle bundle;

     private PmdFileInfo fileInfo;

     private List violations = new ArrayList();

     private boolean aggregate;

     // The number of erroneous files

     private int fileCount = 0;

     //private List metrics = new ArrayList();

     public PmdReportListener( Sink sink, ResourceBundle bundle, boolean aggregate )

     {

         this.sink = sink;

         this.bundle = bundle;

         this.aggregate = aggregate;

     }

     private String getTitle()

     {

         return bundle.getString( "report.pmd.title" );

     }

     public void ruleViolationAdded( IRuleViolation ruleViolation )

     {

         if ( !fileInitialized )

         {

             sink.section2();

             sink.sectionTitle2();

             String title = currentFilename;

             if ( aggregate ) 

             {

                 title = fileInfo.getProject().getName() + " - " + currentFilename;

             }

             sink.text( title );

             sink.sectionTitle2_();

             sink.table();

             sink.tableRow();

             sink.tableHeaderCell();

             sink.text( bundle.getString( "report.pmd.column.violation" ) );

             sink.tableHeaderCell_();

             sink.tableHeaderCell();

             sink.text( bundle.getString( "report.pmd.column.line" ) );

             sink.tableHeaderCell_();

             sink.tableRow_();

             fileInitialized = true;

         }

         violations.add( ruleViolation );

     }

     // When dealing with multiple rulesets, the violations will get out of order

     // wrt their source line number.  We re-sort them before writing them to the report.

     private void processViolations()

     {

         fileCount++;

         Collections.sort( violations, new Comparator()

         {

             public int compare( Object o1, Object o2 )

             {

                 return ( (IRuleViolation) o1 ).getBeginLine() 

                     - ( (IRuleViolation) o2 ).getBeginLine();

             }

         } );

         for ( Iterator it = violations.iterator(); it.hasNext(); )

         {

             IRuleViolation ruleViolation = (IRuleViolation) it.next();

             sink.tableRow();

             sink.tableCell();

             sink.text( ruleViolation.getDescription() );

             sink.tableCell_();

             sink.tableCell();

             int beginLine = ruleViolation.getBeginLine();

             outputLineLink( beginLine );

             int endLine = ruleViolation.getEndLine();

             if ( endLine != beginLine )

             {

                 sink.text( " - " );

                 outputLineLink( endLine );

             }

             sink.tableCell_();

             sink.tableRow_();

         }

         violations.clear();

     }

     private void outputLineLink( int line )

     {

         String xrefLocation = fileInfo.getXrefLocation();

         if ( xrefLocation != null )

         {

             sink.link( xrefLocation + "/" + currentFilename.replaceAll( "\\.java$", ".html" ) + "#" + line );

         }

         sink.text( String.valueOf( line ) );

         if ( xrefLocation != null )

         {

             sink.link_();

         }

     }

     public void metricAdded( Metric metric )

     {

 //        if ( metric.getCount() != 0 )

 //        {

 //            // Skip metrics which have no data

 //            metrics.add( metric );

 //        }

     }

     public void beginDocument()

     {

         sink.head();

         sink.title();

         sink.text( getTitle() );

         sink.title_();

         sink.head_();

         sink.body();

         sink.section1();

         sink.sectionTitle1();

         sink.text( getTitle() );

         sink.sectionTitle1_();

         sink.paragraph();

         sink.text( bundle.getString( "report.pmd.pmdlink" ) + " " );

         sink.link( "http://pmd.sourceforge.net/" );

         sink.text( "PMD" );

         sink.link_();

         sink.text( " " + PMD.VERSION + "." );

         sink.paragraph_();

         // TODO overall summary

         sink.section1_();

         sink.section1();

         sink.sectionTitle1();

         sink.text( bundle.getString( "report.pmd.files" ) );

         sink.sectionTitle1_();

         // TODO files summary

     }

     public void beginFile( File file, PmdFileInfo finfo )

     {

         fileInfo = finfo;

         currentFilename = StringUtils.substring( file.getAbsolutePath(),

                                                  finfo.getSourceDirectory().getAbsolutePath().length() + 1 );

         currentFilename = StringUtils.replace( currentFilename, "\\", "/" );

         fileInitialized = false;

     }

     public void endFile( File file )

     {

         if ( fileInitialized )

         {

             processViolations();

             sink.table_();

             sink.section2_();

         }

     }

     /*

     private void processMetrics()

     {

         if ( metrics.size() == 0 )

         {

             return;

         }

         sink.section1();

         sink.sectionTitle1();

         sink.text( "Metrics" );

         sink.sectionTitle1_();

         sink.table();

         sink.tableRow();

         sink.tableHeaderCell();

         sink.text( "Name" );

         sink.tableHeaderCell_();

         sink.tableHeaderCell();

         sink.text( "Count" );

         sink.tableHeaderCell_();

         sink.tableHeaderCell();

         sink.text( "High" );

         sink.tableHeaderCell_();

         sink.tableHeaderCell();

         sink.text( "Low" );

         sink.tableHeaderCell_();

         sink.tableHeaderCell();

         sink.text( "Average" );

         sink.tableHeaderCell_();

         sink.tableRow_();

         for ( Iterator iter = metrics.iterator(); iter.hasNext(); )

         {

             Metric met = (Metric) iter.next();

             sink.tableRow();

             sink.tableCell();

             sink.text( met.getMetricName() );

             sink.tableCell_();

             sink.tableCell();

             sink.text( String.valueOf( met.getCount() ) );

             sink.tableCell_();

             sink.tableCell();

             sink.text( String.valueOf( met.getHighValue() ) );

             sink.tableCell_();

             sink.tableCell();

             sink.text( String.valueOf( met.getLowValue() ) );

             sink.tableCell_();

             sink.tableCell();

             sink.text( String.valueOf( met.getAverage() ) );

             sink.tableCell_();

             sink.tableRow_();

         }

         sink.table_();

         sink.section1_();

     }

     */

     public void endDocument()

     {

         if ( fileCount == 0 )

         {

             sink.text( "PMD found no problems in your source code." );

         }

         sink.section1_();

         // The Metrics report useless with the current PMD metrics impl.

         // For instance, run the coupling ruleset and you will get a boatload

         // of excessive imports metrics, none of which is really any use.

         // TODO Determine if we are going to just ignore metrics.

         // processMetrics();

         sink.body_();

         sink.flush();

         sink.close();

     }

 }