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org.apache.commons.net.ftp.parser.MVSFTPEntryParser |
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1 | /* |
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2 | * Copyright 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 | ||
18 | import org.apache.commons.net.ftp.FTPClientConfig; |
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19 | import org.apache.commons.net.ftp.FTPFile; |
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20 | ||
21 | /** |
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22 | * Implementation of FTPFileEntryParser and FTPFileListParser for IBM MVS Systems. |
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23 | * |
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24 | * @author <a href="jnadler@srcginc.com">Jeff Nadler</a> |
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25 | * @author <a href="wnoto@openfinance.com">William Noto</a> |
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26 | * @version $Id$ |
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27 | * @see org.apache.commons.net.ftp.FTPFileEntryParser FTPFileEntryParser (for usage instructions) |
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28 | */ |
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29 | public class MVSFTPEntryParser extends ConfigurableFTPFileEntryParserImpl |
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30 | { |
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31 | /** |
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32 | * This is the regular expression used by this parser. |
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33 | */ |
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34 | private static final String REGEX = "(.*)\\s+([^\\s]+)\\s*"; |
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35 | ||
36 | /** |
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37 | * Although this parser is now ignoring dates, someone may someday |
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38 | * figure out a way to accomodate this and this appears to be the |
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39 | * format used. For now, it won't be used. |
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40 | * SMC 2005/04/08 |
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41 | */ |
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42 | static final String DEFAULT_DATE_FORMAT |
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43 | = "yyyy/MM/dd"; // 2001/11/09 |
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44 | ||
45 | ||
46 | // This is not at all the tightest possible regexp for MVS LIST |
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47 | // output, but I'm not a mainframe guru so I have little idea what the |
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48 | // range of valid values are. I just needed to get the filename (Dsname); |
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49 | // note that no other FTPFile fields can be filled in with the results of |
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50 | // a LIST on MVS. The 'Referred' date seems to be 'last accessed date' |
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51 | // and not 'last modified date' so I didn't bother parsing it. |
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52 | // |
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53 | // Of course it works perfectly as-is and it distinguishes header lines from |
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54 | // file results so that's the important thing. |
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55 | // |
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56 | // This parser should be used when SYST returns: |
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57 | // 'MVS is the operating system of this server. FTP Server is running on z/OS.' |
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58 | // |
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59 | // Also note that there is no concept of directories in MVS, just datasets, |
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60 | // which have names composed of four dot separated names of up to 8 chars. |
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61 | // As a result, FTPFile.FILE_TYPE is always used. -JN 6/2004 jnadler<at>srcginc<dotcom> |
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62 | ||
63 | // Sample LIST results from MVS: |
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64 | // |
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65 | //Volume Unit Referred Ext Used Recfm Lrecl BlkSz Dsorg Dsname |
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66 | //FPFS42 3390 2004/06/23 1 1 FB 128 6144 PS INCOMING.RPTBM023.D061704 |
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67 | //FPFS41 3390 2004/06/23 1 1 FB 128 6144 PS INCOMING.RPTBM056.D061704 |
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68 | //FPFS25 3390 2004/06/23 1 1 FB 128 6144 PS INCOMING.WTM204.D061704 |
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69 | ||
70 | /** |
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71 | * The sole constructor for a MVSFTPEntryParser object. |
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72 | * |
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73 | * @exception IllegalArgumentException |
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74 | * Thrown if the regular expression is unparseable. Should not be seen |
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75 | * under normal conditions. It it is seen, this is a sign that |
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76 | * <code>REGEX</code> is not a valid regular expression. |
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77 | */ |
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78 | public MVSFTPEntryParser() |
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79 | { |
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80 | 6 | super(REGEX); |
81 | 6 | } |
82 | ||
83 | /** |
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84 | * Parses a line of an MVS FTP server file listing and converts it into a |
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85 | * usable format in the form of an <code> FTPFile </code> instance. If the |
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86 | * file listing line doesn't describe a file, <code> null </code> is |
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87 | * returned, otherwise a <code> FTPFile </code> instance representing the |
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88 | * files in the directory is returned. |
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89 | * <p> |
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90 | * @param entry A line of text from the file listing |
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91 | * @return An FTPFile instance corresponding to the supplied entry |
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92 | */ |
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93 | public FTPFile parseFTPEntry(String entry) |
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94 | { |
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95 | 17 | FTPFile f = null; |
96 | 17 | if (matches(entry)) |
97 | { |
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98 | 14 | f = new FTPFile(); |
99 | 14 | String dataSetName = group(2); |
100 | 14 | f.setType(FTPFile.FILE_TYPE); |
101 | 14 | f.setName(dataSetName); |
102 | ||
103 | 14 | return (f); |
104 | } |
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105 | 3 | return null; |
106 | } |
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107 | ||
108 | /* |
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109 | * @return |
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110 | */ |
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111 | protected FTPClientConfig getDefaultConfiguration() { |
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112 | 0 | return new FTPClientConfig( |
113 | FTPClientConfig.SYST_MVS, |
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114 | DEFAULT_DATE_FORMAT, |
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115 | null, class="keyword">null, class="keyword">null, class="keyword">null); |
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116 | } |
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117 | } |
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