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| org.apache.commons.net.ftp.parser.NTFTPEntryParser |
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| 1 | /* |
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| 2 | * Copyright 2001-2005 The Apache Software Foundation |
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| 3 | * |
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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| 5 | * you may not use this file except in compliance with the License. |
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| 6 | * You may obtain a copy of the License at |
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| 7 | * |
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 9 | * |
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| 10 | * Unless required by applicable law or agreed to in writing, software |
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 13 | * See the License for the specific language governing permissions and |
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| 14 | * limitations under the License. |
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| 15 | */ |
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| 16 | package org.apache.commons.net.ftp.parser; |
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| 17 | import java.text.ParseException; |
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| 18 | ||
| 19 | import org.apache.commons.net.ftp.FTPClientConfig; |
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| 20 | import org.apache.commons.net.ftp.FTPFile; |
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| 21 | ||
| 22 | /** |
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| 23 | * Implementation of FTPFileEntryParser and FTPFileListParser for NT Systems. |
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| 24 | * |
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| 25 | * @author <a href="Winston.Ojeda@qg.com">Winston Ojeda</a> |
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| 26 | * @author <a href="mailto:scohen@apache.org">Steve Cohen</a> |
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| 27 | * @version $Id: NTFTPEntryParser.java 155429 2005-02-26 13:13:04Z dirkv $ |
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| 28 | * @see org.apache.commons.net.ftp.FTPFileEntryParser FTPFileEntryParser (for usage instructions) |
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| 29 | */ |
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| 30 | public class NTFTPEntryParser extends ConfigurableFTPFileEntryParserImpl |
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| 31 | { |
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| 32 | ||
| 33 | private static final String DEFAULT_DATE_FORMAT |
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| 34 | = "MM-dd-yy hh:mma"; //11-09-01 12:30PM |
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| 35 | ||
| 36 | ||
| 37 | /** |
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| 38 | * this is the regular expression used by this parser. |
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| 39 | */ |
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| 40 | private static final String REGEX = |
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| 41 | "(\\S+)\\s+(\\S+)\\s+" |
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| 42 | + "(<DIR>)?\\s*" |
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| 43 | + "([0-9]+)?\\s+" |
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| 44 | + "(\\S.*)"; |
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| 45 | ||
| 46 | /** |
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| 47 | * The sole constructor for an NTFTPEntryParser object. |
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| 48 | * |
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| 49 | * @exception IllegalArgumentException |
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| 50 | * Thrown if the regular expression is unparseable. Should not be seen |
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| 51 | * under normal conditions. It it is seen, this is a sign that |
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| 52 | * <code>REGEX</code> is not a valid regular expression. |
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| 53 | */ |
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| 54 | public NTFTPEntryParser() |
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| 55 | { |
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| 56 | 36 | this(null); |
| 57 | 36 | } |
| 58 | ||
| 59 | /** |
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| 60 | * This constructor allows the creation of an NTFTPEntryParser object |
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| 61 | * with something other than the default configuration. |
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| 62 | * |
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| 63 | * @param config The {@link FTPClientConfig configuration} object used to |
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| 64 | * configure this parser. |
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| 65 | * @exception IllegalArgumentException |
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| 66 | * Thrown if the regular expression is unparseable. Should not be seen |
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| 67 | * under normal conditions. It it is seen, this is a sign that |
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| 68 | * <code>REGEX</code> is not a valid regular expression. |
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| 69 | * @since 1.4 |
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| 70 | */ |
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| 71 | public NTFTPEntryParser(FTPClientConfig config) |
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| 72 | { |
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| 73 | 36 | super(REGEX); |
| 74 | 36 | configure(config); |
| 75 | 36 | } |
| 76 | ||
| 77 | /** |
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| 78 | * Parses a line of an NT FTP server file listing and converts it into a |
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| 79 | * usable format in the form of an <code> FTPFile </code> instance. If the |
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| 80 | * file listing line doesn't describe a file, <code> null </code> is |
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| 81 | * returned, otherwise a <code> FTPFile </code> instance representing the |
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| 82 | * files in the directory is returned. |
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| 83 | * <p> |
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| 84 | * @param entry A line of text from the file listing |
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| 85 | * @return An FTPFile instance corresponding to the supplied entry |
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| 86 | */ |
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| 87 | public FTPFile parseFTPEntry(String entry) |
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| 88 | { |
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| 89 | 84 | FTPFile f = new FTPFile(); |
| 90 | 84 | f.setRawListing(entry); |
| 91 | ||
| 92 | 84 | if (matches(entry)) |
| 93 | { |
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| 94 | 74 | String datestr = group(1)+" "+group(2); |
| 95 | 74 | String dirString = group(3); |
| 96 | 74 | String size = group(4); |
| 97 | 74 | String name = group(5); |
| 98 | try |
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| 99 | { |
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| 100 | 74 | f.setTimestamp(super.parseTimestamp(datestr)); |
| 101 | } |
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| 102 | 20 | catch (ParseException e) |
| 103 | { |
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| 104 | 20 | return null; // this is a parsing failure too. |
| 105 | 54 | } |
| 106 | ||
| 107 | 54 | if (null == name || name.equals(".") || name.equals("..")) |
| 108 | { |
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| 109 | 0 | return (null); |
| 110 | } |
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| 111 | 54 | f.setName(name); |
| 112 | ||
| 113 | ||
| 114 | 54 | if ("<DIR>".equals(dirString)) |
| 115 | { |
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| 116 | 18 | f.setType(FTPFile.DIRECTORY_TYPE); |
| 117 | 18 | f.setSize(0); |
| 118 | } |
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| 119 | else |
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| 120 | { |
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| 121 | 36 | f.setType(FTPFile.FILE_TYPE); |
| 122 | 36 | if (null != size) |
| 123 | { |
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| 124 | 36 | f.setSize(Long.parseLong(size)); |
| 125 | } |
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| 126 | } |
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| 127 | 54 | return (f); |
| 128 | } |
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| 129 | 10 | return null; |
| 130 | } |
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| 131 | ||
| 132 | /** |
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| 133 | * Defines a default configuration to be used when this class is |
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| 134 | * instantiated without a {@link FTPClientConfig FTPClientConfig} |
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| 135 | * parameter being specified. |
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| 136 | * @return the default configuration for this parser. |
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| 137 | */ |
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| 138 | public FTPClientConfig getDefaultConfiguration() { |
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| 139 | 36 | return new FTPClientConfig( |
| 140 | FTPClientConfig.SYST_NT, |
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| 141 | DEFAULT_DATE_FORMAT, |
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| 142 | null, class="keyword">null, class="keyword">null, class="keyword">null); |
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| 143 | } |
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| 144 | ||
| 145 | } |
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