package org.apache.maven.wagon.providers.ssh;

 /*

  * 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.BufferedReader;

 import java.io.IOException;

 import java.io.StringReader;

 import java.util.ArrayList;

 import java.util.List;

 import java.util.regex.Matcher;

 import java.util.regex.Pattern;

 import org.apache.maven.wagon.TransferFailedException;

 /**

  * LSParser 

  *

  * @author <a href="mailto:joakim@erdfelt.com">Joakim Erdfelt</a>

  * @version $Id: LSParser.java 682071 2008-08-02 22:21:46Z hboutemy $

  */

 public class LSParser

 {

     private final static Pattern PATTERN = Pattern.compile( ".+\\s+[0-9]+\\s+.+\\s+.+\\s+[0-9]+\\s+"

                                                    + "([0-9]{4}-[0-9]{2}-[0-9]{2}|.+\\s+[0-9]+)\\s+[0-9:]+\\s+(.+?)" );

     /**

      * Parse a raw "ls -la", and obtain the list of files.

      * 

      * @todo use ls -1a and do away with the method all together

      * 

      * @param rawLS the raw LS to parse.

      * @return the list of files found.

      * @throws TransferFailedException

      */

     public List parseFiles( String rawLS )

         throws TransferFailedException

     {

         List ret = new ArrayList();

         try

         {

             BufferedReader br = new BufferedReader( new StringReader( rawLS ) );

             String line = br.readLine();

             while ( line != null )

             {

                 line = line.trim();

                 Matcher m = PATTERN.matcher( line );

                 if ( m.matches() )

                 {

                     ret.add( m.group( 2 ) );

                 }

                 line = br.readLine();

             }

         }

         catch ( IOException e )

         {

             throw new TransferFailedException( "Error parsing file listing.", e );

         }

         return ret;

     }

 }