root/main/trunk/greenstone2/common-src/src/gdbmedit/gdbmget/gdbmget.cpp @ 22039

Revision 22039, 2.6 KB (checked in by davidb, 10 years ago)

Improved error reporting to GDBMedit utils

  • Property svn:executable set to *
  • Property svn:keywords set to Author Date Id Revision
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1/**********************************************************************
2 *
3 * gdbmget -- retrieve a single value from the GDBM database
4 * Copyright (C) 1999  The New Zealand Digital Library Project
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 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 *
24 *********************************************************************/
25
26#ifdef __WIN32__
27#include "autoconf.h"
28#include "systems.h"
29#include "gdbmconst.h"
30#include "gdbm.h"
31
32#else
33#include <gdbm.h>
34#endif
35
36#include "gsdlconf.h"
37#include <stdlib.h>
38#include <cstring>
39
40#if defined(GSDL_USE_OBJECTSPACE)
41#include <ospace\std\iostream>
42#elif defined(GSDL_USE_IOS_H)
43#include <iostream.h>
44#else
45#include <iostream>
46#endif
47
48// use the standard namespace
49#if !defined (GSDL_NAMESPACE_BROKEN)
50#if defined(GSDL_USE_OBJECTSPACE)
51using namespace ospace::std;
52#else
53using namespace std;
54#endif
55#endif
56
57void
58print_usage (char *program_name)
59{
60  cerr << "usage: " << program_name << " <database_path> <key>" << endl;
61  cerr << endl;
62}
63
64
65int main (int argc, char *argv[])
66{
67  int block_size = 0;
68  GDBM_FILE dbf;
69  datum key, value;
70 
71  // sanity check
72  if (argc != 3)
73    {
74      print_usage (argv[0]);
75      exit (-1);
76    }
77 
78  // open the database
79#ifdef __WIN32__
80  dbf = gdbm_open (argv[1], block_size, GDBM_READER, 00664, NULL, 0);
81#else
82  dbf = gdbm_open  (argv[1], block_size, GDBM_READER, 00664, NULL);
83#endif
84  if (dbf == NULL)
85    {
86      cerr << argv[0] << ": couldn't open " << argv[1] << endl;
87      exit (-1);
88    }
89 
90  key.dsize = strlen(argv[2]);
91  key.dptr = argv[2];
92  value = gdbm_fetch (dbf, key);
93  if (value.dsize > 0)
94    {
95      for (int i = 0; i < value.dsize; i++)
96        {
97          cout << value.dptr[i];
98        }
99      cout << endl; // used to be printf("\n");
100      // ?? free(value.dptri);
101    }
102  else
103    {
104      cout << endl; // used to be printf("\n");
105    }
106 
107  gdbm_close (dbf);
108  return 0;
109}
110
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