package org.apache.maven.scm.provider.cvslib.command.update;
   
   /*
    * 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.codehaus.plexus.util.cli.StreamConsumer;
  import org.codehaus.plexus.util.StringUtils;
  
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * @author <a href="mailto:trygvis@inamo.no">Trygve Laugst&oslash;l</a>
   *
   */
  public class CvsUpdateConsumer
      implements StreamConsumer
  {
      private ScmLogger logger;
  
      private List<ScmFile> files = new ArrayList<ScmFile>();
  
      public CvsUpdateConsumer( ScmLogger logger )
      {
          this.logger = logger;
      }
  
      /** {@inheritDoc} */
      public void consumeLine( String line )
      {
          if ( logger.isDebugEnabled() )
          {
              logger.debug( line );
          }
  
          if ( line.length() < 3 )
          {
              if ( StringUtils.isNotEmpty( line ) )
              {
                  if ( logger.isWarnEnabled() )
                  {
                      logger.warn( "Unable to parse output from command: line length must be bigger than 3. ("
                          + line + ")." );
                  }
              }
              return;
          }
  
          String status = line.substring( 0, 2 );
  
          String file = line.substring( 2 );
  
          if ( status.equals( "U " ) )
          {
              files.add( new ScmFile( file, ScmFileStatus.UPDATED ) );
          }
          else if ( status.equals( "P " ) )
          {
              files.add( new ScmFile( file, ScmFileStatus.PATCHED ) );
          }
          else if ( status.equals( "A " ) )
          {
              files.add( new ScmFile( file, ScmFileStatus.ADDED ) );
          }
          else if ( status.equals( "C " ) )
          {
              files.add( new ScmFile( file, ScmFileStatus.CONFLICT ) );
          }
          else if ( status.equals( "M " ) )
          {
              files.add( new ScmFile( file, ScmFileStatus.MODIFIED ) );
          }
          else if ( status.equals( "? " ) )
          {
              files.add( new ScmFile( file, ScmFileStatus.UNKNOWN ) );
          }
          else
          {
              if ( logger.isDebugEnabled() )
              {
                 logger.warn( "Unknown status: '" + status + "' for file '" + file + "'." );
             }
         }
     }
 
     public List<ScmFile> getUpdatedFiles()
     {
         return files;
     }
 }