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
|
// This source inspired by https://github.com/fatih/color.
package printer
import (
"fmt"
"strings"
)
type ColorAttribute int
const (
ColorReset ColorAttribute = iota
ColorBold
ColorFaint
ColorItalic
ColorUnderline
ColorBlinkSlow
ColorBlinkRapid
ColorReverseVideo
ColorConcealed
ColorCrossedOut
)
const (
ColorFgHiBlack ColorAttribute = iota + 90
ColorFgHiRed
ColorFgHiGreen
ColorFgHiYellow
ColorFgHiBlue
ColorFgHiMagenta
ColorFgHiCyan
ColorFgHiWhite
)
const (
ColorResetBold ColorAttribute = iota + 22
ColorResetItalic
ColorResetUnderline
ColorResetBlinking
ColorResetReversed
ColorResetConcealed
ColorResetCrossedOut
)
const escape = "\x1b"
var colorResetMap = map[ColorAttribute]ColorAttribute{
ColorBold: ColorResetBold,
ColorFaint: ColorResetBold,
ColorItalic: ColorResetItalic,
ColorUnderline: ColorResetUnderline,
ColorBlinkSlow: ColorResetBlinking,
ColorBlinkRapid: ColorResetBlinking,
ColorReverseVideo: ColorResetReversed,
ColorConcealed: ColorResetConcealed,
ColorCrossedOut: ColorResetCrossedOut,
}
func format(attrs ...ColorAttribute) string {
format := make([]string, 0, len(attrs))
for _, attr := range attrs {
format = append(format, fmt.Sprint(attr))
}
return fmt.Sprintf("%s[%sm", escape, strings.Join(format, ";"))
}
func unformat(attrs ...ColorAttribute) string {
format := make([]string, len(attrs))
for _, attr := range attrs {
v := fmt.Sprint(ColorReset)
reset, exists := colorResetMap[attr]
if exists {
v = fmt.Sprint(reset)
}
format = append(format, v)
}
return fmt.Sprintf("%s[%sm", escape, strings.Join(format, ";"))
}
func colorize(msg string, attrs ...ColorAttribute) string {
return format(attrs...) + msg + unformat(attrs...)
}
|
