package org.apache.maven.artifact.ant.util;

 /*

  * 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.util.Hashtable;

 import java.util.Map;

 import org.apache.tools.ant.Project;

 /**

  * Utility stuff for dealing with Ant.

  */

 public class AntUtil

 {

     /**

      * Copies all properties from the given project to the new project - omitting those that have already been set in the

      * new project as well as properties named basedir or ant.file.

      *

      * @param fromProject copy from

      * @param toProject copy to

      */

     public static void copyProperties( Project fromProject, Project toProject )

     {

         copyProperties( fromProject.getProperties(), toProject );

     }

     /**

      * Copies all properties from the given table to the new project - omitting those that have already been set in the

      * new project as well as properties named basedir or ant.file.

      *

      * @param props properties <code>Hashtable</code> to copy to the new project.

      * @param project the project where the properties are added

      */

     public static void copyProperties( Hashtable<String,String> props, Project project )

     {

         for ( Map.Entry<String, String> entry : props.entrySet() )

         {

             String key = entry.getKey();

             if ( "basedir".equals( key ) || "ant.file".equals( key ) )

             {

                 // basedir and ant.file get special treatment in execute()

                 continue;

             }

             // don't re-set user properties, avoid the warning message

             if ( project.getProperty( key ) == null )

             {

                 // no user property

                 project.setNewProperty( key, entry.getValue() );

             }

         }

     }

     /**

      * Copy references from one project to another.

      *

      * @param fromProject

      * @param toProject

      */

     public static void copyReferences( Project fromProject, Project toProject )

     {

         copyReferences( fromProject.getReferences(), toProject );

     }

     /**

      * Copy references from a hashtable to a project.  Will not

      * overwrite existing references.

      *

      * @param refs

      * @param project

      */

     public static void copyReferences( Hashtable<String,String> refs, Project project )

     {

         for ( Map.Entry<String, String> entry : refs.entrySet() )

         {

             String key = entry.getKey();

             // don't overwrite existing references

             if ( project.getReference( key ) == null )

             {

                 project.addReference( key, entry.getValue() );

             }

         }

     }

 }