package org.apache.maven.shared.jar.identification.exposers;

 /*

  * 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 org.apache.maven.model.Model;

 import org.apache.maven.model.Organization;

 import org.apache.maven.model.io.xpp3.MavenXpp3Reader;

 import org.apache.maven.shared.jar.JarAnalyzer;

 import org.apache.maven.shared.jar.identification.JarIdentification;

 import org.apache.maven.shared.jar.identification.JarIdentificationExposer;

 import org.codehaus.plexus.logging.AbstractLogEnabled;

 import org.codehaus.plexus.util.IOUtil;

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

 import java.io.IOException;

 import java.io.InputStream;

 import java.io.InputStreamReader;

 import java.util.List;

 import java.util.jar.JarEntry;

 /**

  * Exposer that examines a JAR file for any embedded Maven metadata for identification.

  *

  * @plexus.component role="org.apache.maven.shared.jar.identification.JarIdentificationExposer" role-hint="embeddedMavenModel"

  */

 public class EmbeddedMavenModelExposer

     extends AbstractLogEnabled

     implements JarIdentificationExposer

 {

     public void expose( JarIdentification identification, JarAnalyzer jarAnalyzer )

     {

         List entries = jarAnalyzer.getMavenPomEntries();

         if ( entries.isEmpty() )

         {

             return;

         }

         if ( entries.size() > 1 )

         {

             getLogger().warn(

                 "More than one Maven model entry was found in the JAR, using only the first of: " + entries );

         }

         JarEntry pom = (JarEntry) entries.get( 0 );

         MavenXpp3Reader pomreader = new MavenXpp3Reader();

         InputStream is = null;

         try

         {

             is = jarAnalyzer.getEntryInputStream( pom );

             InputStreamReader isreader = new InputStreamReader( is );

             Model model = pomreader.read( isreader );

             identification.addAndSetGroupId( model.getGroupId() );

             identification.addAndSetArtifactId( model.getArtifactId() );

             identification.addAndSetVersion( model.getVersion() );

             identification.addAndSetName( model.getName() );

             // TODO: suboptimal - we are reproducing Maven's built in default

             if ( model.getName() == null )

             {

                 identification.addAndSetName( model.getArtifactId() );

             }

             Organization org = model.getOrganization();

             if ( org != null )

             {

                 identification.addAndSetVendor( org.getName() );

             }

         }

         catch ( IOException e )

         {

             getLogger().error( "Unable to read model " + pom.getName() + " in " + jarAnalyzer.getFile() + ".", e );

         }

         catch ( XmlPullParserException e )

         {

             getLogger().error( "Unable to parse model " + pom.getName() + " in " + jarAnalyzer.getFile() + ".", e );

         }

         finally

         {

             IOUtil.close( is );

         }

     }

 }