1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
/*
This file is part of TALER
Copyright (C) 2020 Taler Systems SA
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
TALER is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file sq/sq_result_helper.c
* @brief functions to initialize parameter arrays
* @author Jonathan Buchanan
*/
#include "platform.h"
#include <sqlite3.h>
#include <gnunet/gnunet_util_lib.h>
#include <gnunet/gnunet_sq_lib.h>
#include "taler_sq_lib.h"
#include "taler_amount_lib.h"
/**
* Extract amount data from a SQLite database
*
* @param cls closure, a `const char *` giving the currency
* @param result where to extract data from
* @param column column to extract data from
* @param[in,out] dst_size where to store size of result, may be NULL
* @param[out] dst where to store the result
* @return
* #GNUNET_YES if all results could be extracted
* #GNUNET_SYSERR if a result was invalid (non-existing field or NULL)
*/
static int
extract_amount_nbo (void *cls,
sqlite3_stmt *result,
unsigned int column,
size_t *dst_size,
void *dst)
{
struct TALER_AmountNBO *amount = dst;
const char *currency = cls;
if ((sizeof (struct TALER_AmountNBO) != *dst_size) ||
(SQLITE_INTEGER != sqlite3_column_type (result,
(int) column)) ||
(SQLITE_INTEGER != sqlite3_column_type (result,
(int) column + 1)))
{
GNUNET_break (0);
return GNUNET_SYSERR;
}
GNUNET_strlcpy (amount->currency, currency, TALER_CURRENCY_LEN);
amount->value = (uint64_t) sqlite3_column_int64 (result,
(int) column);
uint64_t frac = (uint64_t) sqlite3_column_int64 (result,
column + 1);
amount->fraction = (uint32_t) frac;
return GNUNET_YES;
}
/**
* Currency amount expected.
*
* @param currency the currency to use for @a amount
* @param[out] amount where to store the result
* @return array entry for the result specification to use
*/
struct GNUNET_SQ_ResultSpec
TALER_SQ_result_spec_amount_nbo (const char *currency,
struct TALER_AmountNBO *amount)
{
struct GNUNET_SQ_ResultSpec res = {
.conv = &extract_amount_nbo,
.cls = (void *) currency,
.dst = (void *) amount,
.dst_size = sizeof (struct TALER_AmountNBO),
.num_params = 2
};
return res;
}
/* end of sq/sq_result_helper.c */
|
