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.FTPClientConfig; 23 import org.apache.commons.net.ftp.FTPFile; 24 25 /** 26 * Implementation of FTPFileEntryParser and FTPFileListParser for OS2 Systems. 27 * 28 * @see org.apache.commons.net.ftp.FTPFileEntryParser FTPFileEntryParser (for usage instructions) 29 */ 30 public class OS2FTPEntryParser extends ConfigurableFTPFileEntryParserImpl 31 32 { 33 34 private static final String DEFAULT_DATE_FORMAT = "MM-dd-yy HH:mm"; // 11-09-01 12:30 35 /** 36 * this is the regular expression used by this parser. 37 */ 38 private static final String REGEX = "\\s*([0-9]+)\\s*" + "(\\s+|[A-Z]+)\\s*" + "(DIR|\\s+)\\s*" + "(\\S+)\\s+(\\S+)\\s+" /* date stuff */ 39 + "(\\S.*)"; 40 41 /** 42 * The default constructor for a OS2FTPEntryParser object. 43 * 44 * @throws IllegalArgumentException Thrown if the regular expression is unparseable. Should not be seen under normal conditions. If it is seen, this is a 45 * sign that <code>REGEX</code> is not a valid regular expression. 46 */ 47 public OS2FTPEntryParser() { 48 this(null); 49 } 50 51 /** 52 * This constructor allows the creation of an OS2FTPEntryParser object with something other than the default configuration. 53 * 54 * @param config The {@link FTPClientConfig configuration} object used to configure this parser. 55 * @throws IllegalArgumentException Thrown if the regular expression is unparseable. Should not be seen under normal conditions. If it is seen, this is a 56 * sign that <code>REGEX</code> is not a valid regular expression. 57 * @since 1.4 58 */ 59 public OS2FTPEntryParser(final FTPClientConfig config) { 60 super(REGEX); 61 configure(config); 62 } 63 64 /** 65 * Defines a default configuration to be used when this class is instantiated without a {@link FTPClientConfig FTPClientConfig} parameter being specified. 66 * 67 * @return the default configuration for this parser. 68 */ 69 @Override 70 protected FTPClientConfig getDefaultConfiguration() { 71 return new FTPClientConfig(FTPClientConfig.SYST_OS2, DEFAULT_DATE_FORMAT, null); 72 } 73 74 /** 75 * 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 76 * listing line doesn't describe a file, <code> null </code> is returned, otherwise a <code> FTPFile </code> instance representing the files in the 77 * directory is returned. 78 * 79 * @param entry A line of text from the file listing 80 * @return An FTPFile instance corresponding to the supplied entry 81 */ 82 @Override 83 public FTPFile parseFTPEntry(final String entry) { 84 85 final FTPFile f = new FTPFile(); 86 if (matches(entry)) { 87 final String size = group(1); 88 final String attrib = group(2); 89 final String dirString = group(3); 90 final String datestr = group(4) + " " + group(5); 91 final String name = group(6); 92 try { 93 f.setTimestamp(super.parseTimestamp(datestr)); 94 } catch (final ParseException e) { 95 // intentionally do nothing 96 } 97 98 // is it a DIR or a file 99 if (dirString.trim().equals("DIR") || attrib.trim().equals("DIR")) { 100 f.setType(FTPFile.DIRECTORY_TYPE); 101 } else { 102 f.setType(FTPFile.FILE_TYPE); 103 } 104 105 // set the name 106 f.setName(name.trim()); 107 108 // set the size 109 f.setSize(Long.parseLong(size.trim())); 110 111 return f; 112 } 113 return null; 114 115 } 116 117 }