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
|
// file : libbutl/uuid.cxx -*- C++ -*-
// license : MIT; see accompanying LICENSE file
#include <libbutl/uuid.hxx>
#include <errno.h> // ENOTSUP
#include <cstdio> // sprintf() scanf()
#include <cstring> // strlen()
#include <stdexcept>
#include <system_error>
using namespace std;
namespace butl
{
array<char, 37> uuid::
c_string (bool upper) const
{
array<char, 37> r;
sprintf (r.data (),
(upper
? "%08X-%04X-%04X-%02X%02X-%02X%02X%02X%02X%02X%02X"
: "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x"),
time_low,
time_mid,
time_hiv,
clock_seq_hir,
clock_seq_low,
node[0], node[1], node[2], node[3], node[4], node[5]);
return r;
}
void uuid::
assign (const char* s)
{
if (s != nullptr && strlen (s) == 36 && s[8] == '-')
{
if (sscanf (s,
"%8x-%4hx-%4hx-%2hhx%2hhx-%2hhx%2hhx%2hhx%2hhx%2hhx%2hhx",
&time_low,
&time_mid,
&time_hiv,
&clock_seq_hir,
&clock_seq_low,
&node[0], &node[1], &node[2],
&node[3], &node[4], &node[5]) == 11)
return;
}
throw invalid_argument ("invalid UUID string representation");
}
uuid_system_generator uuid::system_generator;
// Utility function used by platform-specified uuid-*.cxx implementations.
//
void
uuid_throw_weak ()
{
throw system_error (ENOTSUP,
generic_category (),
"strong UUID uniqueness cannot be guaranteed");
}
#ifdef BUILD2_BOOTSTRAP
uuid uuid_system_generator::
generate (bool)
{
throw system_error (ENOTSUP,
generic_category (),
"no UUID generation support during bootstrap");
}
void uuid_system_generator::
initialize ()
{
}
void uuid_system_generator::
terminate ()
{
}
#endif // BUILD2_BOOTSTRAP
}
|