package org.apache.maven.plugin.changes;

 /*

  * 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.io.FileInputStream;

 import java.util.Collections;

 import java.util.List;

 import org.apache.maven.plugin.logging.Log;

 import org.apache.maven.plugins.changes.model.Body;

 import org.apache.maven.plugins.changes.model.ChangesDocument;

 import org.apache.maven.plugins.changes.model.Properties;

 import org.apache.maven.plugins.changes.model.io.xpp3.ChangesXpp3Reader;

 /**

  * XML Parser for changes.xml files.

  *

  * @version $Id$

  */

 public class ChangesXML

 {

     private List releaseList;

     private String author;

     private String title;

     private String authorEmail;

     private ChangesDocument changesDocument;

     public ChangesXML( File xmlPath, Log log )

     {

         if (xmlPath == null || !xmlPath.exists())

         {

             log.error( "changes xml file is null or not exists " );

             return;

         }

         try

         {

             ChangesXpp3Reader reader = new ChangesXpp3Reader();

             changesDocument = reader.read( new FileInputStream( xmlPath), false ); 

             if (changesDocument == null)

             {

                 log.error( "cannot build changes from file " + xmlPath.getPath() );

                 return;

             }

             Properties properties = changesDocument.getProperties();

             if (properties != null)

             {

                 if ( properties.getAuthor() != null )

                 {

                     this.author = properties.getAuthor().getName();

                     this.authorEmail = properties.getAuthor().getName(); 

                 }

                 this.title = properties.getTitle();                  

             }

             Body body = changesDocument.getBody();

             if ( body != null )

             {

                 this.releaseList = changesDocument.getBody().getReleases();

             }

         }

         catch ( Throwable e )

         {

             // FIXME throw an Exception ?

             log.error( "An error occured when parsing the changes.xml file:", e );

         }

     }

     public void setAuthor( String author )

     {

         this.author = author;

     }

     public String getAuthor()

     {

         return author;

     }

     public void setReleaseList( List releaseList )

     {

         this.releaseList = releaseList;

     }

     public List getReleaseList()

     {

         return releaseList == null ? Collections.EMPTY_LIST : releaseList;

     }

     public void setTitle( String title )

     {

         this.title = title;

     }

     public String getTitle()

     {

         return title;

     }

     public ChangesDocument getChangesDocument()

     {

         return changesDocument;

     }

     public String getAuthorEmail()

     {

         return authorEmail;

     }

     public void setAuthorEmail( String authorEmail )

     {

         this.authorEmail = authorEmail;

     }

 }