source: gs2-extensions/tdb-edit/trunk/src/src/tdb2txt-src/tdb2txt.cpp@ 23995

Last change on this file since 23995 was 23995, checked in by jmt12, 13 years ago

Initial checkin for the tdb2txt utility

File size: 2.8 KB
Line 
1/**********************************************************************
2 *
3 * tdb2txt.cpp -- A utility to retrieve the entire contents of a TDB
4 * file as text ala buildproc encoded output.
5 *
6 * A component of the Greenstone digital library software
7 * from the New Zealand Digital Library Project at the
8 * University of Waikato, New Zealand.
9 *
10 * Copyright (C) 2011 The New Zealand Digital Library Project
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 *
26 *********************************************************************/
27
28#if defined(GSDL_USE_OBJECTSPACE)
29#include <ospace\std\iostream>
30#elif defined(GSDL_USE_IOS_H)
31#include <iostream.h>
32#else
33#include <iostream>
34#endif
35
36#include "tdb.h"
37#include "text_t.h"
38
39// use the standard namespace
40#if !defined (GSDL_NAMESPACE_BROKEN)
41#if defined(GSDL_USE_OBJECTSPACE)
42using namespace ospace::std;
43#else
44using namespace std;
45#endif
46#endif
47
48/**
49 */
50void
51printUsage (char *program_name)
52{
53 cerr << "usage: " << program_name << " database-name" << endl << endl;
54}
55/** printUsage() **/
56
57/**
58 */
59int
60main (int argc, char *argv[])
61{
62 // sanity check
63 if (argc != 2)
64 {
65 printUsage(argv[0]);
66 exit (0);
67 }
68
69 char *dbname = argv[1];
70
71 // open the database
72 int hash_size = 0;
73 int tdb_flags = TDB_DEFAULT;
74 int open_flags = O_RDONLY;
75 TDB_CONTEXT *tdb = tdb_open(dbname, hash_size, tdb_flags, open_flags, 0664);
76 if (!tdb)
77 {
78 cerr << "couldn't create " << dbname << endl;
79 exit (0);
80 }
81
82 TDB_DATA key = tdb_firstkey (tdb);
83 while (key.dptr != NULL)
84 {
85 cout << "[";
86 for (int i = 0; i < key.dsize; ++i)
87 {
88 cout << key.dptr[i];
89 }
90 cout << "]" << endl;
91 TDB_DATA value = tdb_fetch (tdb, key);
92 for (int i = 0; i < value.dsize; ++i)
93 {
94 cout << value.dptr[i];
95 }
96 cout << endl << "----------------------------------------------------------------------" << endl;
97 free(value.dptr);
98
99 /* get next key */
100 TDB_DATA nextkey = tdb_nextkey (tdb, key);
101
102 /* free old key's dptr, otherwise causes memory leak */
103 free(key.dptr);
104
105 /* can now safely copy content of nextkey into key */
106 key = nextkey;
107 }
108
109 tdb_close(tdb);
110
111 return 0;
112}
113/** main() **/
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