package org.apache.maven.ant.tasks;
   
   /*
    * 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.LinkedHashSet;
  import java.util.Iterator;
  import java.util.Set;
  
  import org.apache.maven.ant.tasks.support.SpecificScopesArtifactFilter;
  import org.apache.maven.ant.tasks.support.TypesArtifactFilter;
  import org.apache.maven.artifact.Artifact;
  import org.apache.maven.artifact.repository.ArtifactRepository;
  import org.apache.maven.artifact.resolver.filter.AndArtifactFilter;
  import org.apache.maven.plugin.antrun.AntRunMojo;
  import org.apache.maven.project.MavenProject;
  import org.apache.tools.ant.BuildException;
  import org.apache.tools.ant.Task;
  import org.apache.tools.ant.types.FileSet;
  
  /**
   * Ant task which create a fileset for each dependency in a Maven project, and a 
   * fileset containing all selected dependencies.
   * 
   * @author pgier
   */
  public class DependencyFilesetsTask
      extends Task
  {
  
      public final static String DEFAULT_PROJECT_DEPENDENCIES_ID = "maven.project.dependencies";
  
      /**
       * The project ref Id of the project being used.
       */
      private String mavenProjectId = AntRunMojo.DEFAULT_MAVEN_PROJECT_REFID;
  
      /**
       * The id to store the dependencies fileset.
       */
      private String projectDependenciesId = DEFAULT_PROJECT_DEPENDENCIES_ID;
  
      public String getProjectDependenciesId()
      {
          return projectDependenciesId;
      }
  
      public void setProjectDependenciesId( String projectDependenciesId )
      {
          this.projectDependenciesId = projectDependenciesId;
      }
  
      /**
       * The string to prepend to all dependency filesets.
       */
      private String prefix = "";
  
      /**
       * A comma separated list of artifact types to include.
       */
      private String types = "";
  
      /**
       * A comma separated list of dependency scopes to include.
       */
      private String scopes = "";
  
      public DependencyFilesetsTask()
      {
  
      }
  
      public void execute()
      {
          if ( this.getProject().getReference( mavenProjectId ) == null )
          {
              throw new BuildException( "Maven project reference not found: " + mavenProjectId );
          }
  
          MavenProject mavenProject = (MavenProject) this.getProject().getReference( "maven.project" );
  
          // Add filesets for depenedency artifacts
         Set depArtifacts = filterArtifacts( mavenProject.getArtifacts() );
 
         FileSet dependenciesFileSet = new FileSet();
         dependenciesFileSet.setProject( getProject() );
         ArtifactRepository localRepository = (ArtifactRepository) getProject().getReference( "maven.local.repository" );
         dependenciesFileSet.setDir( new File( localRepository.getBasedir() ) );
 
         for ( Iterator it = depArtifacts.iterator(); it.hasNext(); )
         {
             Artifact artifact = (Artifact) it.next();
 
             String relativeArtifactPath = localRepository.pathOf( artifact );
             dependenciesFileSet.createInclude().setName( relativeArtifactPath );
 
             String fileSetName = getPrefix() + artifact.getDependencyConflictId();
 
             FileSet singleArtifactFileSet = new FileSet();
             singleArtifactFileSet.setProject( getProject() );
             singleArtifactFileSet.setFile( artifact.getFile() );
             getProject().addReference( fileSetName, singleArtifactFileSet );
         }
 
         getProject().addReference( ( getPrefix() + projectDependenciesId ), dependenciesFileSet );
     }
 
     public String getMavenProjectId()
     {
         return mavenProjectId;
     }
 
     public void setMavenProjectId( String mavenProjectId )
     {
         this.mavenProjectId = mavenProjectId;
     }
 
     public String getPrefix()
     {
         if ( prefix == null )
         {
             prefix = "";
         }
         return prefix;
     }
 
     /**
      * Prefix to be added to each of the dependency filesets. Default is empty string.
      */
     public void setPrefix( String prefix )
     {
         this.prefix = prefix;
     }
 
     public String getTypes()
     {
         return types;
     }
 
     public void setTypes( String types )
     {
         this.types = types;
     }
 
     public String getScopes()
     {
         return scopes;
     }
 
     public void setScopes( String scopes )
     {
         this.scopes = scopes;
     }
 
     /**
      * Filter a set of artifacts using the scopes and type filters.
      * 
      * @param artifacts
      * @return
      */
     public Set filterArtifacts( Set artifacts )
     {
         if ( scopes == null )
         {
             scopes = "";
         }
         if ( types == null )
         {
             types = "";
         }
 
         if ( scopes.equals( "" ) && types.equals( "" ) )
         {
             return artifacts;
         }
 
         AndArtifactFilter filter = new AndArtifactFilter();
         if ( !scopes.equals( "" ) )
         {
             filter.add( new SpecificScopesArtifactFilter( getScopes() ) );
         }
         if ( !types.equals( "" ) )
         {
             filter.add( new TypesArtifactFilter( getTypes() ) );
         }
 
         Set artifactsResult = new LinkedHashSet();
         for ( Iterator iter = artifacts.iterator(); iter.hasNext(); )
         {
             Artifact artifact = (Artifact) iter.next();
             if ( filter.include( artifact ) )
             {
                 artifactsResult.add( artifact );
             }
         }
         return artifactsResult;
     }
 }