1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 package org.apache.commons.net.ftp.parser; 19 20 import java.text.ParseException; 21 22 import org.apache.commons.net.ftp.Configurable; 23 import org.apache.commons.net.ftp.FTPClientConfig; 24 import org.apache.commons.net.ftp.FTPFile; 25 import org.apache.commons.net.ftp.FTPFileEntryParser; 26 27 /** 28 * Implements of {@link FTPFileEntryParser} and {@link Configurable} for OS/2 Systems. 29 * 30 * @see FTPFileEntryParser Usage instructions. 31 */ 32 public class OS2FTPEntryParser extends ConfigurableFTPFileEntryParserImpl 33 34 { 35 36 private static final String DEFAULT_DATE_FORMAT = "MM-dd-yy HH:mm"; // 11-09-01 12:30 37 /** 38 * this is the regular expression used by this parser. 39 */ 40 private static final String REGEX = "\\s*([0-9]+)\\s*" + "(\\s+|[A-Z]+)\\s*" + "(DIR|\\s+)\\s*" + "(\\S+)\\s+(\\S+)\\s+" /* date stuff */ 41 + "(\\S.*)"; 42 43 /** 44 * The default constructor for a OS2FTPEntryParser object. 45 * 46 * @throws IllegalArgumentException Thrown if the regular expression is unparseable. Should not be seen under normal conditions. If it is seen, this is a 47 * sign that <code>REGEX</code> is not a valid regular expression. 48 */ 49 public OS2FTPEntryParser() { 50 this(null); 51 } 52 53 /** 54 * This constructor allows the creation of an OS2FTPEntryParser object with something other than the default configuration. 55 * 56 * @param config The {@link FTPClientConfig configuration} object used to configure this parser. 57 * @throws IllegalArgumentException Thrown if the regular expression is unparseable. Should not be seen under normal conditions. If it is seen, this is a 58 * sign that <code>REGEX</code> is not a valid regular expression. 59 * @since 1.4 60 */ 61 public OS2FTPEntryParser(final FTPClientConfig config) { 62 super(REGEX); 63 configure(config); 64 } 65 66 /** 67 * Defines a default configuration to be used when this class is instantiated without a {@link FTPClientConfig FTPClientConfig} parameter being specified. 68 * 69 * @return the default configuration for this parser. 70 */ 71 @Override 72 protected FTPClientConfig getDefaultConfiguration() { 73 return new FTPClientConfig(FTPClientConfig.SYST_OS2, DEFAULT_DATE_FORMAT, null); 74 } 75 76 /** 77 * Parses a line of an OS2 FTP server file listing and converts it into a usable format in the form of an <code>FTPFile</code> instance. If the file 78 * listing line doesn't describe a file, <code>null</code> is returned, otherwise a <code>FTPFile</code> instance representing the files in the 79 * directory is returned. 80 * 81 * @param entry A line of text from the file listing 82 * @return An FTPFile instance corresponding to the supplied entry 83 */ 84 @Override 85 public FTPFile parseFTPEntry(final String entry) { 86 87 final FTPFile f = new FTPFile(); 88 if (matches(entry)) { 89 final String size = group(1); 90 final String attrib = group(2); 91 final String dirString = group(3); 92 final String datestr = group(4) + " " + group(5); 93 final String name = group(6); 94 try { 95 f.setTimestamp(super.parseTimestamp(datestr)); 96 } catch (final ParseException e) { 97 // intentionally do nothing 98 } 99 100 // is it a DIR or a file 101 if (dirString.trim().equals("DIR") || attrib.trim().equals("DIR")) { 102 f.setType(FTPFile.DIRECTORY_TYPE); 103 } else { 104 f.setType(FTPFile.FILE_TYPE); 105 } 106 107 // set the name 108 f.setName(name.trim()); 109 110 // set the size 111 f.setSize(Long.parseLong(size.trim())); 112 113 return f; 114 } 115 return null; 116 117 } 118 119 }