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.IOException;

 import java.util.HashMap;

 import java.util.Map;

 import org.apache.maven.plugin.MojoExecutionException;

 import org.apache.maven.plugin.MojoFailureException;

 import org.codehaus.plexus.util.xml.pull.XmlPullParser;

 import org.codehaus.plexus.util.xml.pull.XmlPullParserException;

 /**

  * Fail the build if there were any CPD violations in the source code.

  *

  * @goal cpd-check

  * @phase verify

  * @execute goal="cpd"

  */

 public class CpdViolationCheckMojo

     extends AbstractPmdViolationCheckMojo

 {

     /**

      * Skip the CPD violation checks.  Most useful on the command line

      * via "-Dcpd.skip=true".

      *

      * @parameter expression="${cpd.skip}" default-value="false"

      */

     private boolean skip;

     /**

      * @see org.apache.maven.plugin.AbstractMojo#execute()

      */

     public void execute()

         throws MojoExecutionException, MojoFailureException

     {

         if ( !skip )

         {

             executeCheck( "cpd.xml", "duplication", "CPD duplication", 10 );

         }

     }

     /**

      * Formats the failure details and prints them as an INFO message

      * 

      * @param item

      */

     protected void printError( Map item, String severity )

     {

         String lines = (String) item.get( "lines" );

         StringBuffer buff = new StringBuffer( 100 );

         buff.append( "CPD " + severity + ": Found " );

         buff.append( lines ).append( " lines of duplicated code at locations:" );

         this.getLog().info( buff.toString() );

         buff.setLength( 0 );

         buff.append( "    " );

         Map file = (Map) item.get( "file" );

         buff.append( file.get( "path" ) );

         buff.append( " line " ).append( file.get( "line" ) );

         this.getLog().info( buff.toString() );

         buff.setLength( 0 );

         buff.append( "    " );

         file = (Map) item.get( "file1" );

         buff.append( file.get( "path" ) );

         buff.append( " line " ).append( file.get( "line" ) );

         this.getLog().info( buff.toString() );

         Map codefrag = (Map) item.get( "codefragment" );

         String codefragstr = (String) codefrag.get( "text" );

         this.getLog().debug( "CPD " + severity + ": Code Fragment " );

         this.getLog().debug( codefragstr );

     }

     protected Map getErrorDetails( XmlPullParser xpp )

         throws XmlPullParserException, IOException

     {

         int index = 0;

         int attributeCount = 0;

         HashMap msgs = new HashMap();

         attributeCount = xpp.getAttributeCount();

         while ( index < attributeCount )

         {

             msgs.put( xpp.getAttributeName( index ), xpp.getAttributeValue( index ) );

             index++;

         }

         int tp = xpp.next();

         while ( tp != XmlPullParser.END_TAG )

         {

             // get the tag's text

             switch ( tp ) 

             {

             case XmlPullParser.TEXT:

                 msgs.put( "text", xpp.getText().trim() );

                 break;

             case XmlPullParser.START_TAG:

                 {

                     String nm = xpp.getName();

                     if ( msgs.containsKey( nm ) )

                     {

                         int cnt = 1;

                         while ( msgs.containsKey( nm + cnt ) )

                         {

                             ++cnt;

                         }

                         nm = nm + cnt;

                     }

                     msgs.put( nm, getErrorDetails( xpp ) );

                     break;

                 }

             default:

             }

             tp = xpp.next();

         }

         return msgs;

     }

 }