001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 018package org.apache.commons.net.ftp.parser; 019import java.text.ParseException; 020import java.util.regex.Pattern; 021 022import org.apache.commons.net.ftp.Configurable; 023import org.apache.commons.net.ftp.FTPClientConfig; 024import org.apache.commons.net.ftp.FTPFile; 025 026/** 027 * Implementation of FTPFileEntryParser and FTPFileListParser for NT Systems. 028 * 029 * @version $Id: NTFTPEntryParser.java 1741829 2016-05-01 00:24:44Z sebb $ 030 * @see org.apache.commons.net.ftp.FTPFileEntryParser FTPFileEntryParser (for usage instructions) 031 */ 032public class NTFTPEntryParser extends ConfigurableFTPFileEntryParserImpl 033{ 034 035 private static final String DEFAULT_DATE_FORMAT 036 = "MM-dd-yy hh:mma"; //11-09-01 12:30PM 037 038 private static final String DEFAULT_DATE_FORMAT2 039 = "MM-dd-yy kk:mm"; //11-09-01 18:30 040 041 private final FTPTimestampParser timestampParser; 042 043 /** 044 * this is the regular expression used by this parser. 045 */ 046 private static final String REGEX = 047 "(\\S+)\\s+(\\S+)\\s+" // MM-dd-yy whitespace hh:mma|kk:mm; swallow trailing spaces 048 + "(?:(<DIR>)|([0-9]+))\\s+" // <DIR> or ddddd; swallow trailing spaces 049 + "(\\S.*)"; // First non-space followed by rest of line (name) 050 051 /** 052 * The sole constructor for an NTFTPEntryParser object. 053 * 054 * @exception IllegalArgumentException 055 * Thrown if the regular expression is unparseable. Should not be seen 056 * under normal conditions. It it is seen, this is a sign that 057 * <code>REGEX</code> is not a valid regular expression. 058 */ 059 public NTFTPEntryParser() 060 { 061 this(null); 062 } 063 064 /** 065 * This constructor allows the creation of an NTFTPEntryParser object 066 * with something other than the default configuration. 067 * 068 * @param config The {@link FTPClientConfig configuration} object used to 069 * configure this parser. 070 * @exception IllegalArgumentException 071 * Thrown if the regular expression is unparseable. Should not be seen 072 * under normal conditions. It it is seen, this is a sign that 073 * <code>REGEX</code> is not a valid regular expression. 074 * @since 1.4 075 */ 076 public NTFTPEntryParser(FTPClientConfig config) 077 { 078 super(REGEX, Pattern.DOTALL); 079 configure(config); 080 FTPClientConfig config2 = new FTPClientConfig( 081 FTPClientConfig.SYST_NT, 082 DEFAULT_DATE_FORMAT2, 083 null, null, null, null); 084 config2.setDefaultDateFormatStr(DEFAULT_DATE_FORMAT2); 085 this.timestampParser = new FTPTimestampParserImpl(); 086 ((Configurable)this.timestampParser).configure(config2); 087 } 088 089 /** 090 * Parses a line of an NT FTP server file listing and converts it into a 091 * usable format in the form of an <code> FTPFile </code> instance. If the 092 * file listing line doesn't describe a file, <code> null </code> is 093 * returned, otherwise a <code> FTPFile </code> instance representing the 094 * files in the directory is returned. 095 * 096 * @param entry A line of text from the file listing 097 * @return An FTPFile instance corresponding to the supplied entry 098 */ 099 @Override 100 public FTPFile parseFTPEntry(String entry) 101 { 102 FTPFile f = new FTPFile(); 103 f.setRawListing(entry); 104 105 if (matches(entry)) 106 { 107 String datestr = group(1)+" "+group(2); 108 String dirString = group(3); 109 String size = group(4); 110 String name = group(5); 111 try 112 { 113 f.setTimestamp(super.parseTimestamp(datestr)); 114 } 115 catch (ParseException e) 116 { 117 // parsing fails, try the other date format 118 try 119 { 120 f.setTimestamp(timestampParser.parseTimestamp(datestr)); 121 } 122 catch (ParseException e2) 123 { 124 // intentionally do nothing 125 } 126 } 127 128 if (null == name || name.equals(".") || name.equals("..")) 129 { 130 return (null); 131 } 132 f.setName(name); 133 134 135 if ("<DIR>".equals(dirString)) 136 { 137 f.setType(FTPFile.DIRECTORY_TYPE); 138 f.setSize(0); 139 } 140 else 141 { 142 f.setType(FTPFile.FILE_TYPE); 143 if (null != size) 144 { 145 f.setSize(Long.parseLong(size)); 146 } 147 } 148 return (f); 149 } 150 return null; 151 } 152 153 /** 154 * Defines a default configuration to be used when this class is 155 * instantiated without a {@link FTPClientConfig FTPClientConfig} 156 * parameter being specified. 157 * @return the default configuration for this parser. 158 */ 159 @Override 160 public FTPClientConfig getDefaultConfiguration() { 161 return new FTPClientConfig( 162 FTPClientConfig.SYST_NT, 163 DEFAULT_DATE_FORMAT, 164 null, null, null, null); 165 } 166 167}