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org.apache.commons.net.ftp.parser.EnterpriseUnixFTPEntryParser |
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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.util.Calendar; |
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18 | ||
19 | import org.apache.commons.net.ftp.FTPFile; |
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20 | ||
21 | /** |
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22 | * Parser for the Connect Enterprise Unix FTP Server From Sterling Commerce. |
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23 | * Here is a sample of the sort of output line this parser processes: |
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24 | * "-C--E-----FTP B QUA1I1 18128 41 Aug 12 13:56 QUADTEST" |
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25 | * <P><B> |
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26 | * Note: EnterpriseUnixFTPEntryParser can only be instantiated through the |
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27 | * DefaultFTPParserFactory by classname. It will not be chosen |
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28 | * by the autodetection scheme. |
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29 | * </B> |
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30 | * @version $Id: EnterpriseUnixFTPEntryParser.java 165675 2005-05-02 20:09:55Z rwinston $ |
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31 | * @author <a href="Winston.Ojeda@qg.com">Winston Ojeda</a> |
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32 | * @see org.apache.commons.net.ftp.FTPFileEntryParser FTPFileEntryParser (for usage instructions) |
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33 | * @see org.apache.commons.net.ftp.parser.DefaultFTPFileEntryParserFactory |
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34 | */ |
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35 | public class EnterpriseUnixFTPEntryParser extends RegexFTPFileEntryParserImpl |
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36 | { |
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37 | ||
38 | /** |
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39 | * months abbreviations looked for by this parser. Also used |
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40 | * to determine <b>which</b> month has been matched by the parser. |
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41 | */ |
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42 | private static final String MONTHS = |
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43 | "(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)"; |
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44 | ||
45 | /** |
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46 | * this is the regular expression used by this parser. |
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47 | */ |
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48 | private static final String REGEX = |
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49 | "(([\\-]|[A-Z])([\\-]|[A-Z])([\\-]|[A-Z])([\\-]|[A-Z])([\\-]|[A-Z])" |
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50 | + "([\\-]|[A-Z])([\\-]|[A-Z])([\\-]|[A-Z])([\\-]|[A-Z])([\\-]|[A-Z]))" |
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51 | + "(\\S*)\\s*" |
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52 | + "(\\S+)\\s*" |
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53 | + "(\\S*)\\s*" |
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54 | + "(\\d*)\\s*" |
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55 | + "(\\d*)\\s*" |
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56 | + MONTHS |
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57 | + "\\s*" |
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58 | + "((?:[012]\\d*)|(?:3[01]))\\s*" |
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59 | + "((\\d\\d\\d\\d)|((?:[01]\\d)|(?:2[0123])):([012345]\\d))\\s" |
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60 | + "(\\S*)(\\s*.*)"; |
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61 | ||
62 | /** |
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63 | * The sole constructor for a EnterpriseUnixFTPEntryParser object. |
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64 | * |
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65 | */ |
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66 | public EnterpriseUnixFTPEntryParser() |
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67 | { |
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68 | 5 | super(REGEX); |
69 | 5 | } |
70 | ||
71 | /** |
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72 | * Parses a line of a unix FTP server file listing and converts it into a |
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73 | * usable format in the form of an <code> FTPFile </code> instance. If |
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74 | * the file listing line doesn't describe a file, <code> null </code> is |
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75 | * returned, otherwise a <code> FTPFile </code> instance representing the |
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76 | * files in the directory is returned. |
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77 | * |
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78 | * @param entry A line of text from the file listing |
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79 | * @return An FTPFile instance corresponding to the supplied entry |
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80 | */ |
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81 | public FTPFile parseFTPEntry(String entry) |
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82 | { |
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83 | ||
84 | 25 | FTPFile file = new FTPFile(); |
85 | 25 | file.setRawListing(entry); |
86 | ||
87 | 25 | if (matches(entry)) |
88 | { |
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89 | 3 | String usr = group(14); |
90 | 3 | String grp = group(15); |
91 | 3 | String filesize = group(16); |
92 | 3 | String mo = group(17); |
93 | 3 | String da = group(18); |
94 | 3 | String yr = group(20); |
95 | 3 | String hr = group(21); |
96 | 3 | String min = group(22); |
97 | 3 | String name = group(23); |
98 | ||
99 | 3 | file.setType(FTPFile.FILE_TYPE); |
100 | 3 | file.setUser(usr); |
101 | 3 | file.setGroup(grp); |
102 | try |
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103 | { |
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104 | 3 | file.setSize(Long.parseLong(filesize)); |
105 | } |
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106 | 0 | catch (NumberFormatException e) |
107 | { |
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108 | // intentionally do nothing |
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109 | 3 | } |
110 | ||
111 | 3 | Calendar cal = Calendar.getInstance(); |
112 | 3 | cal.set(Calendar.MILLISECOND, 0); |
113 | 3 | cal.set(Calendar.SECOND, |
114 | 0); |
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115 | 3 | cal.set(Calendar.MINUTE, |
116 | 0); |
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117 | 3 | cal.set(Calendar.HOUR_OF_DAY, |
118 | 0); |
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119 | try |
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120 | { |
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121 | ||
122 | 3 | int pos = MONTHS.indexOf(mo); |
123 | 3 | int month = pos / 4; |
124 | 3 | if (yr != null) |
125 | { |
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126 | // it's a year |
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127 | 0 | cal.set(Calendar.YEAR, |
128 | Integer.parseInt(yr)); |
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129 | } |
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130 | else |
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131 | { |
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132 | // it must be hour/minute or we wouldn't have matched |
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133 | 3 | int year = cal.get(Calendar.YEAR); |
134 | ||
135 | // if the month we're reading is greater than now, it must |
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136 | // be last year |
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137 | 3 | if (cal.get(Calendar.MONTH) < month) |
138 | { |
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139 | 0 | year--; |
140 | } |
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141 | 3 | cal.set(Calendar.YEAR, |
142 | year); |
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143 | 3 | cal.set(Calendar.HOUR_OF_DAY, |
144 | Integer.parseInt(hr)); |
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145 | 3 | cal.set(Calendar.MINUTE, |
146 | Integer.parseInt(min)); |
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147 | } |
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148 | 3 | cal.set(Calendar.MONTH, |
149 | month); |
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150 | 3 | cal.set(Calendar.DATE, |
151 | Integer.parseInt(da)); |
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152 | 3 | file.setTimestamp(cal); |
153 | } |
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154 | 0 | catch (NumberFormatException e) |
155 | { |
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156 | // do nothing, date will be uninitialized |
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157 | 3 | } |
158 | 3 | file.setName(name); |
159 | ||
160 | 3 | return file; |
161 | } |
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162 | 22 | return null; |
163 | } |
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164 | } |
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