package org.apache.maven.plugin.eclipse.writers.workspace;

 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;

     }

 }