| 1 | /**********************************************************************
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| 2 | *
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| 3 | * tdbdel -- remove a single value from the TDB database
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| 4 | *
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| 5 | * A component of the Greenstone digital library software
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| 6 | * from the New Zealand Digital Library Project at the
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| 7 | * University of Waikato, New Zealand.
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| 8 | *
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| 9 | * Copyright (C) 2011 The New Zealand Digital Library Project
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| 10 | *
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| 11 | * This program is free software; you can redistribute it and/or modify
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| 12 | * it under the terms of the GNU General Public License as published by
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| 13 | * the Free Software Foundation; either version 2 of the License, or
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| 14 | * (at your option) any later version.
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| 15 | *
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| 16 | * This program is distributed in the hope that it will be useful,
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| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 19 | * GNU General Public License for more details.
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| 20 | *
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| 21 | * You should have received a copy of the GNU General Public License
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| 22 | * along with this program; if not, write to the Free Software
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| 23 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 24 | *
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| 25 | *********************************************************************/
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| 26 |
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| 27 | #if defined(GSDL_USE_OBJECTSPACE)
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| 28 | #include <ospace\std\iostream>
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| 29 | #elif defined(GSDL_USE_IOS_H)
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| 30 | #include <iostream.h>
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| 31 | #else
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| 32 | #include <iostream>
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| 33 | #endif
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| 34 |
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| 35 | #include <cstdlib>
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| 36 | #include <cstring>
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| 37 |
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| 38 | #include <fcntl.h>
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| 39 | #include "tdb.h"
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| 40 |
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| 41 | // use the standard namespace
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| 42 | #if !defined (GSDL_NAMESPACE_BROKEN)
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| 43 | #if defined(GSDL_USE_OBJECTSPACE)
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| 44 | using namespace ospace::std;
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| 45 | #else
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| 46 | using namespace std;
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| 47 | #endif
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| 48 | #endif
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| 49 |
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| 50 | /**
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| 51 | */
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| 52 | void
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| 53 | printUsage (char *program_name)
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| 54 | {
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| 55 | cerr << "usage: " << program_name << " <database_path> <key>" << endl;
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| 56 | cerr << endl;
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| 57 | }
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| 58 | /** printUsage() **/
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| 59 |
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| 60 | /**
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| 61 | */
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| 62 | int
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| 63 | main (int argc, char *argv[])
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| 64 | {
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| 65 | // sanity check
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| 66 | if (argc != 3)
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| 67 | {
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| 68 | printUsage(argv[0]);
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| 69 | exit (-1);
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| 70 | }
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| 71 |
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| 72 | char *dbname = argv[1];
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| 73 |
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| 74 | int hash_size = 0;
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| 75 | int tdb_flags = TDB_DEFAULT; // Default = 0
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| 76 | int open_flags = O_RDWR;
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| 77 | TDB_CONTEXT *tdb = tdb_open(dbname, hash_size, tdb_flags, open_flags, 0664);
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| 78 | if (!tdb)
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| 79 | {
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| 80 | cerr << "couldn't create " << dbname << endl;
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| 81 | exit (0);
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| 82 | }
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| 83 |
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| 84 | TDB_DATA key;
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| 85 | key.dsize = strlen(argv[2]);
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| 86 | key.dptr = (unsigned char*)argv[2];
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| 87 |
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| 88 | int status = tdb_delete (tdb, key);
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| 89 |
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| 90 | // status:
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| 91 | // 0 == delete OK
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| 92 | // -1 == key does not exist or there was an error
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| 93 |
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| 94 | if (status < 0)
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| 95 | {
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| 96 | cerr << "Opened database " << argv[1] << endl;
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| 97 | cerr << " but couldn't delete: " << argv[2] << endl;
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| 98 | }
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| 99 |
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| 100 | tdb_close (tdb);
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| 101 |
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| 102 | return status;
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| 103 | }
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| 104 | /** main() **/
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| 105 |
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