package org.apache.maven.scm.provider.starteam.command.remove;
   
   /*
    * 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.ScmFile;
  import org.apache.maven.scm.ScmFileStatus;
  import org.apache.maven.scm.log.ScmLogger;
  import org.apache.maven.scm.provider.starteam.command.StarteamCommandLineUtils;
  import org.codehaus.plexus.util.cli.StreamConsumer;
  
  import java.io.File;
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * @author <a href="mailto:dantran@gmail.com">Dan T. Tran</a>
   *
   */
  public class StarteamRemoveConsumer
      implements StreamConsumer
  {
      private ScmLogger logger;
  
      private String workingDirectory;
  
      /**
       * the current directory entry being processed by the parser
       */
      private String currentDir;
  
      private List<ScmFile> files = new ArrayList<ScmFile>();
  
      /**
       * Marks current directory data
       */
      private static final String DIR_MARKER = "(working dir: ";
  
      /**
       * Marks current file data
       */
      private static final String ADDED_MARKER = ": removed";
  
      /**
       * Marks current file data
       */
      private static final String LINKTO_MARKER = ": linked to";
  
      public StarteamRemoveConsumer( ScmLogger logger, File basedir )
      {
          this.logger = logger;
  
          this.workingDirectory = basedir.getPath().replace( '\\', '/' );
      }
  
      /** {@inheritDoc} */
      public void consumeLine( String line )
      {
          if ( logger.isDebugEnabled() )
          {
              logger.debug( line );
          }
  
          int pos = 0;
  
          if ( ( pos = line.indexOf( DIR_MARKER ) ) != -1 )
          {
              processDirectory( line, pos );
          }
          else if ( ( pos = line.indexOf( ADDED_MARKER ) ) != -1 )
          {
              processRemovedFile( line, pos );
          }
          else if ( ( pos = line.indexOf( LINKTO_MARKER ) ) != -1 )
          {
              //ignore
          }
          else
          {
              if ( logger.isWarnEnabled() )
              {
                  logger.warn( "Unknown remove ouput: " + line );
              }
         }
     }
 
     public List<ScmFile> getRemovedFiles()
     {
         return files;
     }
 
     private void processDirectory( String line, int pos )
     {
         String dirPath = line.substring( pos + DIR_MARKER.length(), line.length() - 1 ).replace( '\\', '/' );
 
         try
         {
             this.currentDir = StarteamCommandLineUtils.getRelativeChildDirectory( this.workingDirectory, dirPath );
         }
         catch ( IllegalStateException e )
         {
             String error = "Working and checkout directories are not on the same tree";
 
             if ( logger.isErrorEnabled() )
             {
                 logger.error( error );
                 logger.error( "Working directory: " + workingDirectory );
                 logger.error( "Checked out directory: " + dirPath );
             }
 
             throw new IllegalStateException( error );
         }
     }
 
     private void processRemovedFile( String line, int pos )
     {
         String addedFilePath = this.currentDir + "/" + line.substring( 0, pos );
 
         this.files.add( new ScmFile( addedFilePath, ScmFileStatus.DELETED ) );
 
         if ( logger.isInfoEnabled() )
         {
             logger.info( "Removed: " + addedFilePath );
         }
     }
 
 }