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
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
/* Copyright (c) 2019,2021 MariaDB Corporation
This program 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; version 2 of the License.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
#define MYSQL_SERVER
#include "mariadb.h"
#include "my_net.h"
#include "sql_class.h" // THD, SORT_FIELD_ATTR
#include "opt_range.h" // SEL_ARG
#include "sql_type_uuid.h"
static bool get_digit(char ch, uint *val)
{
if (ch >= '0' && ch <= '9')
{
*val= (uint) ch - '0';
return false;
}
if (ch >= 'a' && ch <= 'f')
{
*val= (uint) ch - 'a' + 0x0a;
return false;
}
if (ch >= 'A' && ch <= 'F')
{
*val= (uint) ch - 'A' + 0x0a;
return false;
}
return true;
}
static bool get_digit(uint *val, const char *str, const char *end)
{
if (str >= end)
return true;
return get_digit(*str, val);
}
static size_t skip_hyphens(const char *str, const char *end)
{
const char *str0= str;
for ( ; str < end; str++)
{
if (str[0] != '-')
break;
}
return str - str0;
}
static const char *get_two_digits(char *val, const char *str, const char *end)
{
uint hi, lo;
if (get_digit(&hi, str++, end))
return NULL;
str+= skip_hyphens(str, end);
if (get_digit(&lo, str++, end))
return NULL;
*val= (char) ((hi << 4) + lo);
return str;
}
bool UUID::ascii_to_fbt(const char *str, size_t str_length)
{
const char *end= str + str_length;
/*
The format understood:
- Hyphen is not allowed on the first and the last position.
- Otherwise, hyphens are allowed on any (odd and even) position,
with any amount.
*/
if (str_length < 32)
goto err;
for (uint oidx= 0; oidx < binary_length(); oidx++)
{
if (!(str= get_two_digits(&m_buffer[oidx], str, end)))
goto err;
// Allow hypheps after two digits, but not after the last digit
if (oidx + 1 < binary_length())
str+= skip_hyphens(str, end);
}
if (str < end)
goto err; // Some input left
return false;
err:
bzero(m_buffer, sizeof(m_buffer));
return true;
}
size_t UUID::to_string(char *dst, size_t dstsize) const
{
my_uuid2str((const uchar *) m_buffer, dst, 1);
return MY_UUID_STRING_LENGTH;
}
const Name &UUID::default_value()
{
static Name def(STRING_WITH_LEN("00000000-0000-0000-0000-000000000000"));
return def;
}
|
