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
/*
* libdivecomputer
*
* Copyright (C) 2021 Jef Driesen
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#ifdef _WIN32
#define WIN32_LEAN_AND_MEAN
#define NOGDI
#include <windows.h>
#else
#include <time.h>
#include <errno.h>
#endif
#include <stdio.h>
#include "platform.h"
int
dc_platform_sleep (unsigned int milliseconds)
{
#ifdef _WIN32
Sleep (milliseconds);
#else
struct timespec ts;
ts.tv_sec = (milliseconds / 1000);
ts.tv_nsec = (milliseconds % 1000) * 1000000;
while (nanosleep (&ts, &ts) != 0) {
if (errno != EINTR ) {
return -1;
}
}
#endif
return 0;
}
int
dc_platform_vsnprintf (char *str, size_t size, const char *format, va_list ap)
{
int n = 0;
if (size == 0)
return -1;
#ifdef _MSC_VER
/*
* The non-standard vsnprintf implementation provided by MSVC doesn't null
* terminate the string and returns a negative value if the destination
* buffer is too small.
*/
n = _vsnprintf (str, size - 1, format, ap);
if (n == size - 1 || n < 0)
str[size - 1] = 0;
#else
/*
* The C99 vsnprintf function will always null terminate the string. If the
* destination buffer is too small, the return value is the number of
* characters that would have been written if the buffer had been large
* enough.
*/
n = vsnprintf (str, size, format, ap);
if (n >= 0 && (size_t) n >= size)
n = -1;
#endif
return n;
}
int
dc_platform_snprintf (char *str, size_t size, const char *format, ...)
{
va_list ap;
int n = 0;
va_start (ap, format);
n = dc_platform_vsnprintf (str, size, format, ap);
va_end (ap);
return n;
}