gpg: Prepare for listing last_update and key origin data.
[gnupg.git] / g10 / gpgsql.h
1 /* gpgsql.h - SQLite helper functions.
2  * Copyright (C) 2015 g10 Code GmbH
3  *
4  * This file is part of GnuPG.
5  *
6  * GnuPG is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 3 of the License, or
9  * (at your option) any later version.
10  *
11  * GnuPG is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, see <https://www.gnu.org/licenses/>.
18  */
19
20 #ifndef GNUPG_GPGSQL_H
21 #define GNUPG_GPGSQL_H
22
23 #include <sqlite3.h>
24
25 enum gpgsql_arg_type
26   {
27     GPGSQL_ARG_END = 0xdead001,
28     GPGSQL_ARG_INT,
29     GPGSQL_ARG_LONG_LONG,
30     GPGSQL_ARG_STRING,
31     /* This takes two arguments: the blob as a void * and the length
32        of the blob as a long long.  */
33     GPGSQL_ARG_BLOB
34   };
35
36 int gpgsql_exec_printf (sqlite3 *db,
37                         int (*callback)(void*,int,char**,char**), void *cookie,
38                         char **errmsg,
39                         const char *sql, ...);
40
41 typedef int (*gpgsql_stepx_callback) (void *cookie,
42                                       /* number of columns.  */
43                                       int cols,
44                                       /* columns as text.  */
45                                       char **values,
46                                       /* column names.  */
47                                       char **names,
48                                       /* The prepared statement so
49                                        * that it is possible to use
50                                        * something like
51                                        * sqlite3_column_blob().  */
52                                       sqlite3_stmt *statement);
53
54 int gpgsql_stepx (sqlite3 *db,
55                   sqlite3_stmt **stmtp,
56                   gpgsql_stepx_callback callback,
57                   void *cookie,
58                   char **errmsg,
59                   const char *sql, ...);
60
61 #endif /*GNUPG_GPGSQL_H*/