[23995] | 1 | /**********************************************************************
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| 2 | *
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| 3 | * tdb2txt.cpp -- A utility to retrieve the entire contents of a TDB
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| 4 | * file as text ala buildproc encoded output.
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| 5 | *
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| 6 | * A component of the Greenstone digital library software
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| 7 | * from the New Zealand Digital Library Project at the
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| 8 | * University of Waikato, New Zealand.
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| 9 | *
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| 10 | * Copyright (C) 2011 The New Zealand Digital Library Project
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or modify
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| 13 | * it under the terms of the GNU General Public License as published by
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| 14 | * the Free Software Foundation; either version 2 of the License, or
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| 15 | * (at your option) any later version.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful,
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| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 20 | * GNU General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, write to the Free Software
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| 24 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 25 | *
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| 26 | *********************************************************************/
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| 27 |
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| 28 | #if defined(GSDL_USE_OBJECTSPACE)
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| 29 | #include <ospace\std\iostream>
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| 30 | #elif defined(GSDL_USE_IOS_H)
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| 31 | #include <iostream.h>
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| 32 | #else
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| 33 | #include <iostream>
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| 34 | #endif
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| 35 |
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[23998] | 36 | #include <fcntl.h>
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[23995] | 37 | #include "tdb.h"
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| 38 |
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| 39 | // use the standard namespace
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| 40 | #if !defined (GSDL_NAMESPACE_BROKEN)
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| 41 | #if defined(GSDL_USE_OBJECTSPACE)
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| 42 | using namespace ospace::std;
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| 43 | #else
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| 44 | using namespace std;
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| 45 | #endif
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| 46 | #endif
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| 47 |
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| 48 | /**
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| 49 | */
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| 50 | void
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| 51 | printUsage (char *program_name)
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| 52 | {
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| 53 | cerr << "usage: " << program_name << " database-name" << endl << endl;
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| 54 | }
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| 55 | /** printUsage() **/
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| 56 |
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| 57 | /**
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| 58 | */
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| 59 | int
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| 60 | main (int argc, char *argv[])
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| 61 | {
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| 62 | // sanity check
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| 63 | if (argc != 2)
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| 64 | {
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| 65 | printUsage(argv[0]);
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| 66 | exit (0);
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| 67 | }
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| 68 |
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| 69 | char *dbname = argv[1];
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| 70 |
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| 71 | // open the database
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| 72 | int hash_size = 0;
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| 73 | int tdb_flags = TDB_DEFAULT;
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| 74 | int open_flags = O_RDONLY;
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| 75 | TDB_CONTEXT *tdb = tdb_open(dbname, hash_size, tdb_flags, open_flags, 0664);
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| 76 | if (!tdb)
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| 77 | {
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| 78 | cerr << "couldn't create " << dbname << endl;
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| 79 | exit (0);
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[24046] | 80 | }
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[23995] | 81 |
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[24032] | 82 | TDB_DATA key = tdb_firstkey(tdb);
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[23995] | 83 | while (key.dptr != NULL)
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| 84 | {
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| 85 | cout << "[";
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| 86 | for (int i = 0; i < key.dsize; ++i)
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| 87 | {
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| 88 | cout << key.dptr[i];
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| 89 | }
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| 90 | cout << "]" << endl;
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| 91 | TDB_DATA value = tdb_fetch (tdb, key);
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| 92 | for (int i = 0; i < value.dsize; ++i)
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| 93 | {
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| 94 | cout << value.dptr[i];
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| 95 | }
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| 96 | cout << endl << "----------------------------------------------------------------------" << endl;
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[24046] | 97 |
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| 98 | // caller responsible for freeing this memory
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[23995] | 99 | free(value.dptr);
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| 100 |
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| 101 | /* get next key */
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| 102 | TDB_DATA nextkey = tdb_nextkey (tdb, key);
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| 103 |
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| 104 | /* free old key's dptr, otherwise causes memory leak */
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[24046] | 105 | free(key.dptr);
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| 106 |
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[23995] | 107 | /* can now safely copy content of nextkey into key */
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| 108 | key = nextkey;
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| 109 | }
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[24046] | 110 |
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[23995] | 111 | tdb_close(tdb);
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| 112 |
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| 113 | return 0;
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| 114 | }
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| 115 | /** main() **/
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