package org.apache.maven.scm.provider.cvslib.command.status;
   
   /*
    * 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.util.ArrayList;
  import java.util.List;
  
  import org.apache.maven.scm.ScmFile;
  import org.apache.maven.scm.ScmFileStatus;
  import org.apache.maven.scm.log.ScmLogger;
  import org.codehaus.plexus.util.StringUtils;
  import org.codehaus.plexus.util.cli.StreamConsumer;
  
  /**
   * @author <a href="mailto:brett@apache.org">Brett Porter</a>
   *
   */
  public class CvsStatusConsumer
      implements StreamConsumer
  {
      private ScmLogger logger;
  
      private File workingDirectory;
  
      private List<ScmFile> changedFiles = new ArrayList<ScmFile>();
  
      // ----------------------------------------------------------------------
      //
      // ----------------------------------------------------------------------
  
      public CvsStatusConsumer( ScmLogger logger, File workingDirectory )
      {
          this.logger = logger;
  
          this.workingDirectory = workingDirectory;
      }
  
      // ----------------------------------------------------------------------
      // StreamConsumer Implementation
      // ----------------------------------------------------------------------
  
      /** {@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 statusString = line.substring( 0, 1 );
  
          String file = line.substring( 2 );
  
          ScmFileStatus status;
  
          if ( statusString.equals( "A" ) )
          {
              status = ScmFileStatus.ADDED;
          }
          else if ( statusString.equals( "M" ) )
          {
              status = ScmFileStatus.MODIFIED;
          }
          else if ( statusString.equals( "D" ) )
          {
              status = ScmFileStatus.DELETED;
          }
          else if ( statusString.equals( "C" ) )
         {
             status = ScmFileStatus.CONFLICT;
         }
         else if ( statusString.equals( "?" ) )
         {
             status = ScmFileStatus.UNKNOWN;
         }
         else if ( statusString.equals( "U" ) || statusString.equals( "P" ) )
         {
             // skip remote changes
             return;
         }
         else
         {
             if ( logger.isInfoEnabled() )
             {
                 logger.info( "Unknown file status: '" + statusString + "'." );
             }
 
             return;
         }
 
         // If the file isn't a file; don't add it.
         if ( !status.equals( ScmFileStatus.DELETED ) && !new File( workingDirectory, file ).isFile() )
         {
             return;
         }
 
         changedFiles.add( new ScmFile( file, status ) );
     }
 
     public List<ScmFile> getChangedFiles()
     {
         return changedFiles;
     }
 }