blob: 8f45706f5a36dc1fc8a1624c937495be56b61d28 (
plain)
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
|
package driver
func notWhitespace(sql string) bool {
const (
code = iota
slash
minus
ccomment
sqlcomment
endcomment
)
state := code
for _, b := range ([]byte)(sql) {
if b == 0 {
break
}
switch state {
case code:
switch b {
case '/':
state = slash
case '-':
state = minus
case ' ', ';', '\t', '\n', '\v', '\f', '\r':
continue
default:
return true
}
case slash:
if b != '*' {
return true
}
state = ccomment
case minus:
if b != '-' {
return true
}
state = sqlcomment
case ccomment:
if b == '*' {
state = endcomment
}
case sqlcomment:
if b == '\n' {
state = code
}
case endcomment:
switch b {
case '/':
state = code
case '*':
state = endcomment
default:
state = ccomment
}
}
}
return state == slash || state == minus
}
|
