package org.apache.maven.plugin;
   
   /* ====================================================================
    *   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.FileNotFoundException;
  import java.io.IOException;
  import java.io.InputStream;
  import java.util.HashMap;
  import java.util.Map;
  import java.util.Properties;
  
  import javax.xml.parsers.ParserConfigurationException;
  import javax.xml.parsers.SAXParser;
  import javax.xml.parsers.SAXParserFactory;
  
  import org.apache.commons.jelly.Script;
  import org.apache.maven.MavenException;
  import org.apache.maven.MavenUtils;
  import org.apache.maven.jelly.MavenJellyContext;
  import org.apache.maven.project.Project;
  import org.xml.sax.InputSource;
  import org.xml.sax.SAXException;
  
  /**
   * @author <a href="mailto:jason@maven.org">Jason van Zyl</a>
   * 
   * @version $Id: JellyScriptHousing.java 530196 2007-04-18 23:04:51Z aheritier $
   */
  public class JellyScriptHousing
  {
      /** Plug-in default properties name. */
      private static final String PLUGIN_PROPERTIES_NAME = "plugin.properties";
  
      /** Plugin properties. */
      private Map pluginProperties = new HashMap();
  
      /** Plugin Project. */
      private Project project;
  
      /** Jelly Script. */
      private Script script;
  
      /** the source of the jelly script. */
      private File source;
  
      private final String name;
  
      private final File pluginDirectory;
  
      private final MavenJellyContext parentContext;
  
      public JellyScriptHousing()
      {
          this.name = null;
          this.pluginDirectory = null;
          this.parentContext = null;
      }
  
      public JellyScriptHousing( File pluginDir, MavenJellyContext parentContext ) throws IOException
      {
          this.pluginDirectory = pluginDir;
          this.name = pluginDir.getName();
          this.source = new File( pluginDir, "plugin.jelly" );
          this.parentContext = parentContext;
          this.pluginProperties = loadPluginProperties();
      }
  
      // ----------------------------------------------------------------------
      // Accessors
      // ----------------------------------------------------------------------
  
      public File getSource()
      {
          return source;
      }
  
      public void setSource( File source )
      {
          this.source = source;
      }
  
     /**
      * 
      * @return Project
      */
     public Project getProject() throws MavenException
     {
         if ( project == null )
         {
             project = MavenUtils.getProject( new File( pluginDirectory, "project.xml" ), parentContext, false );
         }
         return project;
     }
 
     /**
      * 
      * @param project
      */
     public void setProject( Project project )
     {
         this.project = project;
     }
 
     public void setScript( Script script )
     {
         this.script = script;
     }
 
     /**
      * 
      * @return Script
      */
     Script getScript()
     {
         return script;
     }
 
     public String toString()
     {
         return "\n source = " + getSource() + "\n project = " + project + "\n script = " + script;
     }
 
     /**
      * @return String
      */
     public String getName()
     {
         return name;
     }
 
     void parse( PluginDefinitionHandler handler, String systemId, InputStream inStream ) throws MavenException
     {
         try
         {
             SAXParserFactory factory = SAXParserFactory.newInstance();
             factory.setNamespaceAware( true );
             SAXParser parser = factory.newSAXParser();
             InputSource is = new InputSource( inStream );
             is.setSystemId( systemId );
             parser.parse( is, new PluginScriptParser( handler, this ) );
         }
         catch ( ParserConfigurationException e )
         {
             throw new MavenException( systemId + " : Error parsing plugin script", e );
         }
         catch ( SAXException e )
         {
             throw new MavenException( systemId + " : Error parsing plugin script", e );
         }
         catch ( IOException e )
         {
             throw new MavenException( systemId + " : Error reading plugin script", e );
         }
     }
 
     void parse( PluginDefinitionHandler handler ) throws MavenException
     {
         FileInputStream fis = null;
         try
         {
             fis = new FileInputStream( source );
             parse( handler, source.getAbsolutePath(), fis );
         }
         catch ( FileNotFoundException e )
         {
             throw new MavenException( source + " : Error reading plugin script", e );
         }
         finally
         {
             if ( fis != null )
             {
                 try
                 {
                     fis.close();
                 }
                 catch ( IOException e )
                 {
                     // Nothing to do
                 }
                 fis = null;
             }
         }
     }
 
     /**
      * @return Map
      */
     public Map getPluginProperties()
     {
         return pluginProperties;
     }
 
     /**
      * @return File
      */
     public File getPluginDirectory()
     {
         return pluginDirectory;
     }
 
     /**
      * Retrieve the plugin's default properties.
      * 
      * @param unpackedPluginDir
      *            The location of the unpacked plugin.
      * @return The default properties file for the plugin, or <code>null</code> if no such plugin.
      * @throws IOException
      *             If an IO error occurs while attempting to read the plugin's properties.
      */
     private Map loadPluginProperties() throws IOException
     {
         Map map = new HashMap();
 
         File propsFile = new File( pluginDirectory, PLUGIN_PROPERTIES_NAME );
 
         if ( propsFile.exists() )
         {
             Properties props = new Properties();
             FileInputStream in = null;
             try
             {
                 in = new FileInputStream( propsFile );
                 props.load( in );
                 map.putAll( props );
             }
             finally
             {
                 if ( in != null )
                 {
                     try
                     {
                         in.close();
                     }
                     catch ( IOException e )
                     {
                         // Nothing to do
                     }
                     in = null;
                 }
             }
         }
 
         return map;
     }
 }