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
|
package dialect
import (
"math"
"strconv"
"github.com/uptrace/bun/internal"
)
func AppendError(b []byte, err error) []byte {
b = append(b, "?!("...)
b = append(b, err.Error()...)
b = append(b, ')')
return b
}
func AppendNull(b []byte) []byte {
return append(b, "NULL"...)
}
func AppendBool(b []byte, v bool) []byte {
if v {
return append(b, "TRUE"...)
}
return append(b, "FALSE"...)
}
func AppendFloat32(b []byte, v float32) []byte {
return appendFloat(b, float64(v), 32)
}
func AppendFloat64(b []byte, v float64) []byte {
return appendFloat(b, v, 64)
}
func appendFloat(b []byte, v float64, bitSize int) []byte {
switch {
case math.IsNaN(v):
return append(b, "'NaN'"...)
case math.IsInf(v, 1):
return append(b, "'Infinity'"...)
case math.IsInf(v, -1):
return append(b, "'-Infinity'"...)
default:
return strconv.AppendFloat(b, v, 'f', -1, bitSize)
}
}
//------------------------------------------------------------------------------
func AppendIdent(b []byte, field string, quote byte) []byte {
return appendIdent(b, internal.Bytes(field), quote)
}
func appendIdent(b, src []byte, quote byte) []byte {
var quoted bool
loop:
for _, c := range src {
switch c {
case '*':
if !quoted {
b = append(b, '*')
continue loop
}
case '.':
if quoted {
b = append(b, quote)
quoted = false
}
b = append(b, '.')
continue loop
}
if !quoted {
b = append(b, quote)
quoted = true
}
if c == quote {
b = append(b, quote, quote)
} else {
b = append(b, c)
}
}
if quoted {
b = append(b, quote)
}
return b
}
|
