-
Notifications
You must be signed in to change notification settings - Fork 1
/
colors.go
93 lines (76 loc) · 2.04 KB
/
colors.go
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
/*
Copyright © 2023 The Helm Compose Authors
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package util
import (
"fmt"
"hash/fnv"
"strconv"
"github.com/jwalton/go-supportscolor"
)
type ColorPrinter struct {
colorFunc func(...interface{}) string
}
var PrintColors = true
func NewColorPrinter(s string) *ColorPrinter {
c := hashColor(s)
return &ColorPrinter{
colorFunc: c,
}
}
func (c ColorPrinter) Printf(format string, a ...any) {
if PrintColors {
fmt.Printf(c.colorFunc(format)+"\n", a...)
return
}
fmt.Printf(format+"\n", a...)
}
var colorFuncs [](func(...interface{}) string) = [](func(...interface{}) string){
color("%s"), // fallback
color("\033[1;32m%s\033[0m"),
color("\033[1;33m%s\033[0m"),
color("\033[1;34m%s\033[0m"),
color("\033[1;35m%s\033[0m"),
color("\033[1;36m%s\033[0m"),
color("\033[1;90m%s\033[0m"),
color("\033[1;92m%s\033[0m"),
color("\033[1;93m%s\033[0m"),
color("\033[1;94m%s\033[0m"),
color("\033[1;95m%s\033[0m"),
color("\033[1;96m%s\033[0m"),
}
func color(colorString string) func(...interface{}) string {
sprint := func(args ...interface{}) string {
return fmt.Sprintf(colorString,
fmt.Sprint(args...))
}
return sprint
}
func hashColor(s string) func(...interface{}) string {
if !supportscolor.Stdout().SupportsColor {
return colorFuncs[0]
}
h := fnv.New32a()
h.Write([]byte(s))
hash := fmt.Sprint(h.Sum32())
for {
subtotal := 0
for _, r := range hash {
value, _ := strconv.Atoi(string(r))
subtotal += value
}
if subtotal < len(colorFuncs) {
return colorFuncs[subtotal]
}
hash = fmt.Sprint(subtotal)
}
}