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1   /*
2    * Copyright 2004-2005 The Apache Software Foundation
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *     http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.apache.commons.net.ftp.parser;
17  
18  import java.text.ParseException;
19  
20  import org.apache.commons.net.ftp.FTPClientConfig;
21  import org.apache.commons.net.ftp.FTPFile;
22  
23  /**
24   * @version $Id: OS400FTPEntryParser.java 155429 2005-02-26 13:13:04Z dirkv $
25   */
26  
27  public class OS400FTPEntryParser extends ConfigurableFTPFileEntryParserImpl
28  {
29      private static final String DEFAULT_DATE_FORMAT 
30  		= "yy/MM/dd HH:mm:ss"; //01/11/09 12:30:24
31      
32  
33  
34  	private static final String REGEX =
35          "(\\S+)\\s+"                // user
36          + "(\\d+)\\s+"              // size
37          + "(\\S+)\\s+(\\S+)\\s+"    // date stuff 
38          + "(\\*\\S+)\\s+"               // *STMF/*DIR
39          + "(\\S+/?)\\s*";               // filename
40  
41      
42      /**
43       * The default constructor for a OS400FTPEntryParser object.
44       *
45       * @exception IllegalArgumentException
46       * Thrown if the regular expression is unparseable.  Should not be seen
47       * under normal conditions.  It it is seen, this is a sign that
48       * <code>REGEX</code> is  not a valid regular expression.
49       */
50      public OS400FTPEntryParser()
51      {
52          this(null);
53      }
54  
55      /**
56       * This constructor allows the creation of an OS400FTPEntryParser object 
57       * with something other than the default configuration.
58       *
59       * @param config The {@link FTPClientConfig configuration} object used to 
60       * configure this parser.
61       * @exception IllegalArgumentException
62       * Thrown if the regular expression is unparseable.  Should not be seen
63       * under normal conditions.  It it is seen, this is a sign that
64       * <code>REGEX</code> is  not a valid regular expression.
65       * @since 1.4
66       */
67      public OS400FTPEntryParser(FTPClientConfig config)
68      {
69          super(REGEX);
70          configure(config);
71      }
72  
73  
74      public FTPFile parseFTPEntry(String entry)
75      {
76  
77          FTPFile file = new FTPFile();
78          file.setRawListing(entry);
79          int type;
80  
81          if (matches(entry))
82          {
83              String usr = group(1);
84              String filesize = group(2);
85          	String datestr = group(3)+" "+group(4);
86              String typeStr = group(5);
87              String name = group(6);
88              
89              try
90              {
91                  file.setTimestamp(super.parseTimestamp(datestr));
92              }
93              catch (ParseException e)
94              {
95              	return null;  // this is a parsing failure too.
96              }
97  
98  
99              if (typeStr.equalsIgnoreCase("*STMF"))
100             {
101                 type = FTPFile.FILE_TYPE;
102             }
103             else if (typeStr.equalsIgnoreCase("*DIR"))
104             {
105                 type = FTPFile.DIRECTORY_TYPE;
106             }
107             else
108             {
109                 type = FTPFile.UNKNOWN_TYPE;
110             }
111 
112             file.setType(type);
113 
114             file.setUser(usr);
115 
116             try
117             {
118                 file.setSize(Long.parseLong(filesize));
119             }
120             catch (NumberFormatException e)
121             {
122                 // intentionally do nothing
123             }
124 
125             if (name.endsWith("/"))
126             {
127                 name = name.substring(0, name.length() - 1);
128             }
129             int pos = name.lastIndexOf('/');
130             if (pos > -1)
131             {
132                 name = name.substring(pos + 1);
133             }
134 
135             file.setName(name);
136 
137             return file;
138         }
139         return null;
140     }
141 
142     /**
143      * Defines a default configuration to be used when this class is
144      * instantiated without a {@link  FTPClientConfig  FTPClientConfig}
145      * parameter being specified.
146      * @return the default configuration for this parser.
147      */
148     protected FTPClientConfig getDefaultConfiguration() {
149         return new FTPClientConfig(
150                 FTPClientConfig.SYST_OS400,
151                 DEFAULT_DATE_FORMAT,
152                 null, null, null, null);
153     }
154 
155 }