package org.apache.maven.scm.provider.local.command.list;
   
   /*
    * 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.scm.ScmException;
  import org.apache.maven.scm.ScmFile;
  import org.apache.maven.scm.ScmFileSet;
  import org.apache.maven.scm.ScmFileStatus;
  import org.apache.maven.scm.ScmVersion;
  import org.apache.maven.scm.command.list.AbstractListCommand;
  import org.apache.maven.scm.command.list.ListScmResult;
  import org.apache.maven.scm.provider.ScmProviderRepository;
  import org.apache.maven.scm.provider.local.repository.LocalScmProviderRepository;
  import org.codehaus.plexus.util.StringUtils;
  
  import java.io.File;
  import java.util.ArrayList;
  import java.util.Iterator;
  import java.util.List;
  
  /**
   * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>
   *
   */
  public class LocalListCommand
      extends AbstractListCommand
  {
      /** {@inheritDoc} */
      protected ListScmResult executeListCommand( ScmProviderRepository repo, ScmFileSet fileSet, boolean recursive,
                                                  ScmVersion version )
          throws ScmException
      {
          if ( version != null )
          {
              throw new ScmException( "The local scm doesn't support tags." );
          }
  
          LocalScmProviderRepository repository = (LocalScmProviderRepository) repo;
  
          File root = new File( repository.getRoot() );
  
          String module = repository.getModule();
  
          File source = new File( root, module );
  
          if ( !root.exists() )
          {
              throw new ScmException( "The base directory doesn't exist (" + root.getAbsolutePath() + ")." );
          }
  
          if ( !source.exists() )
          {
              throw new ScmException( "The module directory doesn't exist (" + source.getAbsolutePath() + ")." );
          }
  
          if ( getLogger().isInfoEnabled() )
          {
              getLogger().info( "Listing files of '" + source.getAbsolutePath() + "'." );
          }
  
          try
          {
              if ( fileSet.getFileList() == null || fileSet.getFileList().isEmpty() )
              {
                  return new LocalListScmResult( null, getFiles( source, source, recursive ) );
              }
              else
              {
                  List<ScmFile> files = new ArrayList<ScmFile>();
                  Iterator<File> it = fileSet.getFileList().iterator();
  
                  while ( it.hasNext() )
                  {
                      File file = (File) it.next();
  
                      files.addAll( getFiles( source, new File( source, file.getPath() ), recursive ) );
                  }
  
                  return new LocalListScmResult( null, files );
              }
          }
          catch ( Exception e )
         {
             return new ListScmResult( null, "The svn command failed.", e.getMessage(), false );
         }
     }
 
     private List<ScmFile> getFiles( File source, File directory, boolean recursive )
         throws Exception
     {
         if ( !directory.exists() )
         {
             throw new Exception( "Directory '" + directory.getAbsolutePath() + "' doesn't exist." );
         }
 
         List<ScmFile> files = new ArrayList<ScmFile>();
 
         File[] filesArray = directory.listFiles();
 
         if ( filesArray != null )
         {
             for ( int i = 0; i < filesArray.length; i++ )
             {
                 File f = filesArray[i];
 
                 String path = f.getAbsolutePath().substring( source.getAbsolutePath().length() );
                 path = StringUtils.replace( path, "\\", "/" );
                 path = StringUtils.replace( path, "/./", "/" );
 
                 files.add( new ScmFile( path, ScmFileStatus.CHECKED_IN ) );
 
                 if ( f.isDirectory() && recursive )
                 {
                     files.addAll( getFiles( source, f, recursive ) );
                 }
             }
         }
 
         return files;
     }
 }