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
|
package config
import (
"bytes"
"errors"
"fmt"
"io"
)
func (p *configParser) parseValue() (string, error) {
var (
value bytes.Buffer
inQuote bool
inComment bool
)
trimLen := 0
for {
ch, err := p.nextChar()
if errors.Is(err, io.EOF) {
if inQuote {
return "", errors.New("unexpected EOF in quoted value")
}
if trimLen > 0 {
return truncateAtNUL(value.String()[:trimLen]), nil
}
return truncateAtNUL(value.String()), nil
}
if err != nil {
return "", err
}
if ch == '\n' {
if inQuote {
return "", errors.New("newline in quoted value")
}
if trimLen > 0 {
return truncateAtNUL(value.String()[:trimLen]), nil
}
return truncateAtNUL(value.String()), nil
}
if inComment {
continue
}
if isWhitespace(ch) && !inQuote {
if trimLen == 0 && value.Len() > 0 {
trimLen = value.Len()
}
if value.Len() > 0 {
value.WriteByte(ch)
}
continue
}
if !inQuote && (ch == '#' || ch == ';') {
inComment = true
continue
}
if trimLen > 0 {
trimLen = 0
}
if ch == '\\' {
next, err := p.nextChar()
if errors.Is(err, io.EOF) {
return "", errors.New("unexpected EOF after backslash")
}
if err != nil {
return "", err
}
switch next {
case '\n':
continue
case 'n':
value.WriteByte('\n')
case 't':
value.WriteByte('\t')
case 'b':
value.WriteByte('\b')
case '\\', '"':
value.WriteByte(next)
default:
return "", fmt.Errorf("invalid escape sequence: \\%c", next)
}
continue
}
if ch == '"' {
inQuote = !inQuote
continue
}
value.WriteByte(ch)
}
}
|
