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
|
package utils
import (
"regexp"
"sync"
)
var decoloriseCache = make(map[string]string)
var decoloriseMutex sync.RWMutex
// Decolorise strips a string of color
func Decolorise(str string) string {
decoloriseMutex.RLock()
val := decoloriseCache[str]
decoloriseMutex.RUnlock()
if val != "" {
return val
}
re := regexp.MustCompile(`\x1B\[([0-9]{1,3}(;[0-9]{1,3})*)?[mGK]`)
ret := re.ReplaceAllString(str, "")
decoloriseMutex.Lock()
decoloriseCache[str] = ret
decoloriseMutex.Unlock()
return ret
}
func IsValidHexValue(v string) bool {
if len(v) != 4 && len(v) != 7 {
return false
}
if v[0] != '#' {
return false
}
for _, char := range v[1:] {
switch char {
case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f', 'A', 'B', 'C', 'D', 'E', 'F':
continue
default:
return false
}
}
return true
}
|