package org.apache.maven.plugin.eclipse.writers.workspace;
   
   /*
    * 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.ByteArrayOutputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.InputStreamReader;
  import java.io.Reader;
  import java.net.URL;
  
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugin.eclipse.Messages;
  import org.codehaus.plexus.util.IOUtil;
  import org.codehaus.plexus.util.xml.Xpp3Dom;
  import org.codehaus.plexus.util.xml.Xpp3DomBuilder;
  import org.codehaus.plexus.util.xml.pull.XmlPullParserException;
  
  /**
   * an Eclipse code style file
   * 
   * @author dtran
   */
  
  public class EclipseCodeFormatterProfile
  {
      private static final String ELT_PROFILE = "profile";
  
      /**
       * String presentation of the formatter with EOLs are escaped so that it can be embedded in a property value
       */
      private String content;
  
      private String profileName;
  
      public EclipseCodeFormatterProfile init( URL url, String profileName )
          throws MojoExecutionException
      {
  
          this.profileName = profileName;
  
          if ( this.profileName == null )
          {
              loadDefaultProfileName( url );
          }
  
          this.convertFormatterToString( url );
  
          return this;
      }
  
      private void loadDefaultProfileName( URL url )
          throws MojoExecutionException
      {
          Reader reader = null;
          try
          {
              reader = new InputStreamReader( url.openStream() );
              Xpp3Dom dom = Xpp3DomBuilder.build( reader );
  
              Xpp3Dom[] existingProfiles = dom.getChildren( ELT_PROFILE );
              if ( existingProfiles.length != 0 )
              {
                  Xpp3Dom firstProfile = existingProfiles[0];
                  this.profileName = firstProfile.getAttribute( "name" );
              }
          }
          catch ( XmlPullParserException e )
          {
              throw new MojoExecutionException( Messages.getString( "EclipsePlugin.cantparseexisting", url.toString() ) ); //$NON-NLS-1$
          }
          catch ( IOException e )
          {
              throw new MojoExecutionException( Messages.getString( "EclipsePlugin.cantparseexisting", url.toString() ) ); //$NON-NLS-1$
          }
          finally
          {
              IOUtil.close( reader );
          }
      }
  
     private void convertFormatterToString( URL url )
         throws MojoExecutionException
     {
         InputStream is = null;
 
         ByteArrayOutputStream os = new ByteArrayOutputStream();
 
         try
         {
             is = url.openStream();
 
             IOUtil.copy( is, os );
         }
         catch ( IOException e )
         {
             throw new MojoExecutionException( Messages.getString( "EclipsePlugin.cantreadfile", url.toString() ), e ); //$NON-NLS-1$
         }
         finally
         {
             IOUtil.close( is );
         }
 
         content = os.toString();
 
     }
 
     public String getContent()
     {
         return this.content;
     }
 
     public String getProfileName()
     {
         return this.profileName;
     }
 
 }