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color.go
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color.go
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package main
import (
"strconv"
"strings"
)
const escape = "\x1b"
// Base attributes.
const (
Reset byte = iota
Bold
Faint
Italic
Underline
BlinkSlow
BlinkRapid
ReverseVideo
Concealed
CrossedOut
)
// Foreground text colors.
const (
FgBlack byte = iota + 30
FgRed
FgGreen
FgYellow
FgBlue
FgMagenta
FgCyan
FgWhite
)
// Foreground Hi-Intensity text colors.
const (
FgHiBlack byte = iota + 90
FgHiRed
FgHiGreen
FgHiYellow
FgHiBlue
FgHiMagenta
FgHiCyan
FgHiWhite
)
// Background text colors.
const (
BgBlack byte = iota + 40
BgRed
BgGreen
BgYellow
BgBlue
BgMagenta
BgCyan
BgWhite
)
// Background Hi-Intensity text colors.
const (
BgHiBlack byte = iota + 100
BgHiRed
BgHiGreen
BgHiYellow
BgHiBlue
BgHiMagenta
BgHiCyan
BgHiWhite
)
func WithColors(s string, col ...byte) string {
if len(col) == 0 {
return s
}
f := make([]string, len(col))
for i, v := range col {
f[i] = strconv.Itoa(int(v))
}
b := strings.Builder{}
b.WriteString(escape)
b.WriteString("[")
for i, v := range col {
if i > 0 {
b.WriteString(";")
}
b.WriteString(strconv.Itoa(int(v)))
}
b.WriteString("m")
b.WriteString(s)
b.WriteString(escape)
b.WriteString("[0m")
return b.String()
}