package org.apache.maven.scm.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.IOException;
  
  import org.apache.maven.plugin.MojoExecutionException;
  import org.apache.maven.plugins.annotations.Mojo;
  import org.apache.maven.scm.ScmException;
  import org.apache.maven.scm.ScmFile;
  import org.apache.maven.scm.command.status.StatusScmResult;
  import org.apache.maven.scm.repository.ScmRepository;
  import org.codehaus.plexus.util.StringUtils;
  
  /**
   * Display the modification status of the files in the configured scm url.
   *
   * @author <a href="evenisse@apache.org">Emmanuel Venisse</a>
   * @author Olivier Lamy
   */
  @Mojo( name = "status", aggregator = true )
  public class StatusMojo
      extends AbstractScmMojo
  {
      /** {@inheritDoc} */
      public void execute()
          throws MojoExecutionException
      {
          super.execute();
  
          try
          {
              ScmRepository repository = getScmRepository();
  
              StatusScmResult result = getScmManager().status( repository, getFileSet() );
  
              checkResult( result );
  
              File baseDir = getFileSet().getBasedir();
  
              // Determine the maximum length of the status column
              int maxLen = 0;
  
              for ( ScmFile file : result.getChangedFiles() )
              {
                  maxLen = Math.max( maxLen, file.getStatus().toString().length() );
              }
  
              for ( ScmFile file : result.getChangedFiles() )
              {
                  // right align all of the statuses
                  getLog().info(
                                 StringUtils.leftPad( file.getStatus().toString(), maxLen ) + " status for "
                                     + getRelativePath( baseDir, file.getPath() ) );
              }
          }
          catch ( IOException e )
          {
              throw new MojoExecutionException( "Cannot run status command : ", e );
          }
          catch ( ScmException e )
          {
              throw new MojoExecutionException( "Cannot run status command : ", e );
          }
      }
  
      /**
       * Formats the filename so that it is a relative directory from the base.
       *
       * @param baseDir
       * @param path
       * @return The relative path
       */
      protected String getRelativePath( File baseDir, String path )
      {
          if ( path.equals( baseDir.getAbsolutePath() ) )
          {
              return ".";
          }
          else if ( path.indexOf( baseDir.getAbsolutePath() ) == 0 )
          {
             // the + 1 gets rid of a leading file separator
             return path.substring( baseDir.getAbsolutePath().length() + 1 );
         }
         else
         {
             return path;
         }
     }
 }