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
|
/*
* Copyright (c) 2017-2021 [Ribose Inc](https://www.ribose.com).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef RNP_UTILS_H_
#define RNP_UTILS_H_
#include <stdio.h>
#include <limits.h>
#include "logging.h"
/* number of elements in an array */
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(*(a)))
/*
* @params
* array: array of the structures to lookup
* id_field name of the field to compare against
* ret_field filed to return
* lookup_value lookup value
* ret return value
*/
#define ARRAY_LOOKUP_BY_ID(array, id_field, ret_field, lookup_value, ret) \
do { \
for (size_t i__ = 0; i__ < ARRAY_SIZE(array); i__++) { \
if ((array)[i__].id_field == (lookup_value)) { \
(ret) = (array)[i__].ret_field; \
break; \
} \
} \
} while (0)
/* Portable way to convert bits to bytes */
#define BITS_TO_BYTES(b) (((b) + (CHAR_BIT - 1)) / CHAR_BIT)
/* Load little-endian 32-bit from y to x in portable fashion */
inline void
LOAD32LE(uint32_t &x, const uint8_t y[4])
{
x = (static_cast<uint32_t>(y[3]) << 24) | (static_cast<uint32_t>(y[2]) << 16) |
(static_cast<uint32_t>(y[1]) << 8) | (static_cast<uint32_t>(y[0]) << 0);
}
/* Store big-endian 32-bit value x in y */
inline void
STORE32BE(uint8_t x[4], uint32_t y)
{
x[0] = (uint8_t)(y >> 24) & 0xff;
x[1] = (uint8_t)(y >> 16) & 0xff;
x[2] = (uint8_t)(y >> 8) & 0xff;
x[3] = (uint8_t)(y >> 0) & 0xff;
}
/* Store big-endian 64-bit value x in y */
inline void
STORE64BE(uint8_t x[8], uint64_t y)
{
x[0] = (uint8_t)(y >> 56) & 0xff;
x[1] = (uint8_t)(y >> 48) & 0xff;
x[2] = (uint8_t)(y >> 40) & 0xff;
x[3] = (uint8_t)(y >> 32) & 0xff;
x[4] = (uint8_t)(y >> 24) & 0xff;
x[5] = (uint8_t)(y >> 16) & 0xff;
x[6] = (uint8_t)(y >> 8) & 0xff;
x[7] = (uint8_t)(y >> 0) & 0xff;
}
inline char *
getenv_logname(void)
{
char *name = getenv("LOGNAME");
if (!name) {
name = getenv("USER");
}
return name;
}
#endif
|
