package org.apache.maven.archiver;

 /*

  * 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.io.FileOutputStream;

 import java.io.IOException;

 import java.io.InputStream;

 import java.io.OutputStream;

 import java.util.Properties;

 import org.apache.maven.project.MavenProject;

 import org.codehaus.plexus.archiver.Archiver;

 import org.codehaus.plexus.archiver.ArchiverException;

 import org.codehaus.plexus.util.IOUtil;

 /**

  * This class is responsible for creating the pom.properties

  * file.

  * @version $Id: PomPropertiesUtil.java 661727 2008-05-30 14:21:49Z bentmann $

  */

 public class PomPropertiesUtil

 {

     private static final String GENERATED_BY_MAVEN = "Generated by Maven";

     private boolean sameContents( Properties props, File file )

             throws IOException

     {

         if ( !file.isFile() )

         {

             return false;

         }

         Properties fileProps = new Properties();

         InputStream istream = null;

         try 

         {

             istream = new FileInputStream( file );

             fileProps.load( istream );

             istream.close();

             istream = null;

             return fileProps.equals( props );

         }

         catch ( IOException e )

         {

             return false;

         }

         finally

         {

             IOUtil.close( istream );

         }

     }

     private void createPropertyFile( Properties properties, File outputFile,

                                      boolean forceCreation )

         throws IOException

     {

         File outputDir = outputFile.getParentFile();

         if ( outputDir != null  &&  !outputDir.isDirectory()  &&  !outputDir.mkdirs() )

         {

             throw new IOException( "Failed to create directory: " + outputDir );

         }

         if ( !forceCreation  &&  sameContents( properties, outputFile ) )

         {

             return;

         }

         OutputStream os = new FileOutputStream( outputFile );

         try

         {

             properties.store( os, GENERATED_BY_MAVEN );

             os.close(); // stream is flushed but not closed by Properties.store()

             os = null;

         }

         finally

         {

             IOUtil.close( os );

         }

     }

     /**

      * Creates the pom.properties file.

      */

     public void createPomProperties( MavenProject project, Archiver archiver, File pomPropertiesFile,

                                      boolean forceCreation )

         throws ArchiverException, IOException

     {

         final String artifactId = project.getArtifactId();

         final String groupId = project.getGroupId();

         Properties p = new Properties();

         p.setProperty( "groupId", project.getGroupId() );

         p.setProperty( "artifactId", project.getArtifactId() );

         p.setProperty( "version", project.getVersion() );

         createPropertyFile( p, pomPropertiesFile, forceCreation );

         archiver.addFile( pomPropertiesFile, "META-INF/maven/" + groupId + "/" + artifactId + "/pom.properties" );

     }

 }