[21395] | 1 | /**********************************************************************
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| 2 | *
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| 3 | * Jdb2Txt.java --
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| 4 | * A component of the Greenstone digital library software
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| 5 | * from the New Zealand Digital Library Project at the
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| 6 | * University of Waikato, New Zealand.
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| 7 | *
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| 8 | * Copyright (C) 1999 The New Zealand Digital Library Project
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| 9 | *
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| 10 | * This program is free software; you can redistribute it and/or modify
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| 11 | * it under the terms of the GNU General Public License as published by
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| 12 | * the Free Software Foundation; either version 2 of the License, or
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| 13 | * (at your option) any later version.
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| 14 | *
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| 15 | * This program is distributed in the hope that it will be useful,
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| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 18 | * GNU General Public License for more details.
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| 19 | *
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| 20 | * You should have received a copy of the GNU General Public License
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| 21 | * along with this program; if not, write to the Free Software
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| 22 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 23 | *
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| 24 | **********************************************************************/
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| 25 |
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| 26 | import jdbm.RecordManager;
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| 27 | import jdbm.RecordManagerFactory;
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| 28 | import jdbm.helper.FastIterator;
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| 29 | import jdbm.htree.HTree;
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| 30 |
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| 31 | import java.io.IOException;
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[21403] | 32 | import java.io.UnsupportedEncodingException;
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| 33 | import java.io.OutputStreamWriter;
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| 34 | import java.io.PrintWriter;
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[21395] | 35 | import java.util.Properties;
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| 36 |
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| 37 |
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| 38 | public class Jdb2Txt
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| 39 | {
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| 40 | static String TNAME = "greenstone";
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| 41 |
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| 42 | RecordManager recman_;
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| 43 | HTree hashtable_;
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| 44 |
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[21403] | 45 | static private PrintWriter utf8out = null;
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[21395] | 46 |
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[21403] | 47 | static
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| 48 | {
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| 49 | try {
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| 50 | OutputStreamWriter osw = new OutputStreamWriter(System.out, "UTF-8");
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| 51 | utf8out = new PrintWriter(osw, true);
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| 52 | }
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| 53 | catch (UnsupportedEncodingException e) {
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| 54 | System.out.println(e);
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| 55 | }
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| 56 | }
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| 57 |
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[21395] | 58 | public Jdb2Txt(String db_filename)
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| 59 | throws IOException
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| 60 | {
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[21403] | 61 | if (db_filename.endsWith(".jdb")) {
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| 62 | // remove file extension as JDBM does not expect it
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| 63 | db_filename = db_filename.substring(0,db_filename.length()-4);
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| 64 | }
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| 65 |
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[21395] | 66 | // create or open a record manager
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| 67 | Properties props = new Properties();
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| 68 | recman_ = RecordManagerFactory.createRecordManager(db_filename, props);
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| 69 |
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| 70 | // create or load table
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| 71 | long recid = recman_.getNamedObject(TNAME);
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| 72 | if (recid != 0) {
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| 73 | hashtable_ = HTree.load(recman_, recid);
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| 74 | }
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| 75 | else {
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| 76 | System.err.println("Failed to find database table '" + TNAME +"' ...");
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| 77 | System.exit(-1);
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| 78 | }
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| 79 | }
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| 80 |
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| 81 |
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| 82 | public void db2txt()
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| 83 | throws IOException
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| 84 | {
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| 85 | FastIterator iter;
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| 86 | String key;
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| 87 | String val;
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| 88 |
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| 89 | iter = hashtable_.keys();
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| 90 | key = (String) iter.next();
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| 91 | while (key != null) {
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| 92 | val = (String) hashtable_.get(key);
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[21403] | 93 | utf8out.println("[" + key + "]");
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| 94 | utf8out.println(val);
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[21395] | 95 | // 70 hypens
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[21403] | 96 | utf8out.println("----------------------------------------------------------------------");
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[21395] | 97 | key = (String) iter.next();
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| 98 | }
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| 99 |
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| 100 | recman_.close();
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| 101 | }
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| 102 |
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| 103 |
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| 104 | public static void print_usage()
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| 105 | {
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| 106 | System.err.println("Usage: java Jdb2Txt database-name");
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| 107 | System.exit(-1);
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| 108 | }
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| 109 |
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| 110 |
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| 111 | public static void main(String[] args)
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| 112 | {
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| 113 | if (args.length != 1) {
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| 114 | print_usage();
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| 115 | }
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| 116 |
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| 117 | String dbname = args[0];
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| 118 |
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| 119 | try {
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| 120 |
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| 121 | Jdb2Txt table = new Jdb2Txt(dbname);
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| 122 | table.db2txt();
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| 123 | }
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| 124 | catch (IOException e) {
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| 125 | e.printStackTrace();
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| 126 | }
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| 127 | }
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| 128 |
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| 129 | } |
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