package org.apache.maven.scm.provider.svn.svnexe.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 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;
  
  import java.io.File;
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * @author <a href="mailto:trygvis@inamo.no">Trygve Laugst&oslash;l</a>
   *
   */
  public class SvnStatusConsumer
      implements StreamConsumer
  {
      private ScmLogger logger;
  
      private File workingDirectory;
  
      private List<ScmFile> changedFiles = new ArrayList<ScmFile>();
  
      // ----------------------------------------------------------------------
      //
      // ----------------------------------------------------------------------
  
      public SvnStatusConsumer( 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 ( StringUtils.isEmpty( line.trim() ) )
          {
              return;
          }
  
          if ( line.length() <= 7 )
          {
              if ( logger.isWarnEnabled() )
              {
                  logger.warn( "Unexpected input, the line must be at least seven characters long. Line: '" + line + "'." );
              }
  
              return;
          }
  
          String statusString = line.substring( 0, 1 );
  
          String file = line.substring( 7 ).trim();
  
          ScmFileStatus status;
  
          //  The first six columns in the output are each one character wide:
          //    First column: Says if item was added, deleted, or otherwise changed
          //      ' ' no modifications
          //      'A' Added
          //      'C' Conflicted
          //      'D' Deleted
          //      'I' Ignored
          //      'M' Modified
          //      'R' Replaced
          //      'X' item is unversioned, but is used by an externals definition
          //      '?' item is not under version control
          //      '!' item is missing (removed by non-svn command) or incomplete
         //      '~' versioned item obstructed by some item of a different kind
         //    Second column: Modifications of a file's or directory's properties
         //      ' ' no modifications
         //      'C' Conflicted
         //      'M' Modified
         //    Third column: Whether the working copy directory is locked
         //      ' ' not locked
         //      'L' locked
         //    Fourth column: Scheduled commit will contain addition-with-history
         //      ' ' no history scheduled with commit
         //      '+' history scheduled with commit
         //    Fifth column: Whether the item is switched relative to its parent
         //      ' ' normal
         //      'S' switched
         //    Sixth column: Repository lock token
         //      (without -u)
         //      ' ' no lock token
         //      'K' lock token present
         //      (with -u)
         //      ' ' not locked in repository, no lock token
         //      'K' locked in repository, lock toKen present
         //      'O' locked in repository, lock token in some Other working copy
         //      'T' locked in repository, lock token present but sTolen
         //      'B' not locked in repository, lock token present but Broken
         //
         //  The out-of-date information appears in the eighth column (with -u):
         //      '*' a newer revision exists on the server
         //      ' ' the working copy is up to date
         if ( statusString.equals( "A" ) )
         {
             status = ScmFileStatus.ADDED;
         }
         else if ( statusString.equals( "M" ) || statusString.equals( "R" ) || statusString.equals( "~" ) )
         {
             status = ScmFileStatus.MODIFIED;
         }
         else if ( statusString.equals( "D" ) )
         {
             status = ScmFileStatus.DELETED;
         }
         else if ( statusString.equals( "?" ) )
         {
             status = ScmFileStatus.UNKNOWN;
         }
         else if ( statusString.equals( "!" ) )
         {
             status = ScmFileStatus.MISSING;
         }
         else if ( statusString.equals( "C" ) )
         {
             status = ScmFileStatus.CONFLICT;
         }
         else if ( statusString.equals( "L" ) )
         {
             status = ScmFileStatus.LOCKED;
         }
         else if ( statusString.equals( "X" ) )
         {
             //skip svn:external entries
             return;
         }
         else if ( statusString.equals( "I" ) )
         {
             //skip svn:external entries
             return;
         }
         else
         {
             //Parse the second column
             statusString = line.substring( 1, 1 );
 
             if ( statusString.equals( "M" ) )
             {
                 status = ScmFileStatus.MODIFIED;
             }
             else if ( statusString.equals( "C" ) )
             {
                 status = ScmFileStatus.CONFLICT;
             }
             else
             {
                 //The line isn't a status line, ie something like 'Performing status on external item at...'
                 //or a status defined in next columns
                 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;
     }
 }