summaryrefslogtreecommitdiff
path: root/src/include/taler_json_lib.h
blob: b224c4b3350ee3edb75c0d8f16143951a807f73a (plain)
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
93
94
95
96
97
98
99
100
101
/*
  This file is part of TALER
  (C) 2014 Christian Grothoff (and other contributing authors)

  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, If not, see <http://www.gnu.org/licenses/>
*/

/**
 * @file include/taler_json_lib.h
 * @brief helper functions for JSON processing using libjansson
 * @author Sree Harsha Totakura <sreeharsha@totakura.in>
 */

#ifndef TALER_JSON_LIB_H_
#define TALER_JSON_LIB_H_

#include <jansson.h>


/**
 * Convert a TALER amount to a JSON
 * object.
 *
 * @param amount the amount
 * @return a json object describing the amount
 */
json_t *
TALER_JSON_from_amount (struct TALER_Amount amount);


/**
 * Convert absolute timestamp to a json string.
 *
 * @param the time stamp
 * @return a json string with the timestamp in @a stamp
 */
json_t *
TALER_JSON_from_abs (struct GNUNET_TIME_Absolute stamp);



/**
 * Convert binary data to a JSON string
 * with the base32crockford encoding.
 *
 * @param data binary data
 * @param size size of @a data in bytes
 * @return json string that encodes @a data
 */
json_t *
TALER_JSON_from_data (const void *data, size_t size);


/**
 * Parse given JSON object to Amount
 *
 * @param json the json object representing Amount
 * @param r_amount where the amount has to be written
 * @return GNUNET_OK upon successful parsing; GNUNET_SYSERR upon error
 */
int
TALER_JSON_to_amount (json_t *json,
                      struct TALER_Amount *r_amount);

/**
 * Parse given JSON object to absolute time.
 *
 * @param json the json object representing absolute time in seconds
 * @param r_abs where the time has to be written
 * @return GNUNET_OK upon successful parsing; GNUNET_SYSERR upon error
 */
int
TALER_JSON_to_abs (json_t *json,
                   struct GNUNET_TIME_Absolute *r_abs);

/**
 * Parse given JSON object to data
 *
 * @param json the json object representing data
 * @param out the pointer to hold the parsed data.
 * @param out_size the size of r_data.
 * @return GNUNET_OK upon successful parsing; GNUNET_SYSERR upon error
 */
int
TALER_JSON_to_data (json_t *json,
                    void *out,
                    size_t out_size);


#endif /* TALER_JSON_LIB_H_ */

/* End of taler_json_lib.h */