/
color.go
346 lines (279 loc) · 7.32 KB
/
color.go
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package color
import (
"bytes"
"fmt"
)
type (
inner func(interface{}, []string, *Color) string
)
// Color styles
const (
// Blk Black text style
Blk = "30"
// Rd red text style
Rd = "31"
// Grn green text style
Grn = "32"
// Yel yellow text style
Yel = "33"
// Blu blue text style
Blu = "34"
// Mgn magenta text style
Mgn = "35"
// Cyn cyan text style
Cyn = "36"
// Wht white text style
Wht = "37"
// Gry grey text style
Gry = "90"
// BlkBg black background style
BlkBg = "40"
// RdBg red background style
RdBg = "41"
// GrnBg green background style
GrnBg = "42"
// YelBg yellow background style
YelBg = "43"
// BluBg blue background style
BluBg = "44"
// MgnBg magenta background style
MgnBg = "45"
// CynBg cyan background style
CynBg = "46"
// WhtBg white background style
WhtBg = "47"
// R reset emphasis style
R = "0"
// B bold emphasis style
B = "1"
// D dim emphasis style
D = "2"
// I italic emphasis style
I = "3"
// U underline emphasis style
U = "4"
// In inverse emphasis style
In = "7"
// H hidden emphasis style
H = "8"
// S strikeout emphasis style
S = "9"
)
var (
black = outer(Blk)
red = outer(Rd)
green = outer(Grn)
yellow = outer(Yel)
blue = outer(Blu)
magenta = outer(Mgn)
cyan = outer(Cyn)
white = outer(Wht)
grey = outer(Gry)
blackBg = outer(BlkBg)
redBg = outer(RdBg)
greenBg = outer(GrnBg)
yellowBg = outer(YelBg)
blueBg = outer(BluBg)
magentaBg = outer(MgnBg)
cyanBg = outer(CynBg)
whiteBg = outer(WhtBg)
reset = outer(R)
bolt = outer(B)
dim = outer(D)
italic = outer(I)
underline = outer(U)
inverse = outer(In)
hidden = outer(H)
strikeout = outer(S)
global = New()
)
func outer(n string) inner {
return func(msg interface{}, styles []string, c *Color) string {
// TODO: May be drop fmt to boost performance
if c.disabled {
return fmt.Sprintf("%v", msg)
}
b := new(bytes.Buffer)
b.WriteString("\x1b[")
b.WriteString(n)
for _, s := range styles {
b.WriteString(";")
b.WriteString(s)
}
b.WriteString("m")
return fmt.Sprintf("%s%v\x1b[0m", b.String(), msg)
}
}
type (
Color struct {
disabled bool
}
)
// New creates a Color instance.
func New() *Color {
return &Color{}
}
// Disable disables the colors and styles.
func (c *Color) Disable() {
c.disabled = true
}
// Enable enables the colors and styles.
func (c *Color) Enable() {
c.disabled = false
}
func (c *Color) Black(msg interface{}, styles ...string) string {
return black(msg, styles, c)
}
func (c *Color) Red(msg interface{}, styles ...string) string {
return red(msg, styles, c)
}
func (c *Color) Green(msg interface{}, styles ...string) string {
return green(msg, styles, c)
}
func (c *Color) Yellow(msg interface{}, styles ...string) string {
return yellow(msg, styles, c)
}
func (c *Color) Blue(msg interface{}, styles ...string) string {
return blue(msg, styles, c)
}
func (c *Color) Magenta(msg interface{}, styles ...string) string {
return magenta(msg, styles, c)
}
func (c *Color) Cyan(msg interface{}, styles ...string) string {
return cyan(msg, styles, c)
}
func (c *Color) White(msg interface{}, styles ...string) string {
return white(msg, styles, c)
}
func (c *Color) Grey(msg interface{}, styles ...string) string {
return grey(msg, styles, c)
}
func (c *Color) BlackBg(msg interface{}, styles ...string) string {
return blackBg(msg, styles, c)
}
func (c *Color) RedBg(msg interface{}, styles ...string) string {
return redBg(msg, styles, c)
}
func (c *Color) GreenBg(msg interface{}, styles ...string) string {
return greenBg(msg, styles, c)
}
func (c *Color) YellowBg(msg interface{}, styles ...string) string {
return yellowBg(msg, styles, c)
}
func (c *Color) BlueBg(msg interface{}, styles ...string) string {
return blueBg(msg, styles, c)
}
func (c *Color) MagentaBg(msg interface{}, styles ...string) string {
return magentaBg(msg, styles, c)
}
func (c *Color) CyanBg(msg interface{}, styles ...string) string {
return cyanBg(msg, styles, c)
}
func (c *Color) WhiteBg(msg interface{}, styles ...string) string {
return whiteBg(msg, styles, c)
}
func (c *Color) Reset(msg interface{}, styles ...string) string {
return reset(msg, styles, c)
}
func (c *Color) Bold(msg interface{}, styles ...string) string {
return bolt(msg, styles, c)
}
func (c *Color) Dim(msg interface{}, styles ...string) string {
return dim(msg, styles, c)
}
func (c *Color) Italic(msg interface{}, styles ...string) string {
return italic(msg, styles, c)
}
func (c *Color) Underline(msg interface{}, styles ...string) string {
return underline(msg, styles, c)
}
func (c *Color) Inverse(msg interface{}, styles ...string) string {
return inverse(msg, styles, c)
}
func (c *Color) Hidden(msg interface{}, styles ...string) string {
return hidden(msg, styles, c)
}
func (c *Color) Strikeout(msg interface{}, styles ...string) string {
return strikeout(msg, styles, c)
}
func Disable() {
global.disabled = true
}
func Enable() {
global.disabled = false
}
func Black(msg interface{}, styles ...string) string {
return global.Black(msg, styles...)
}
func Red(msg interface{}, styles ...string) string {
return global.Red(msg, styles...)
}
func Green(msg interface{}, styles ...string) string {
return global.Green(msg, styles...)
}
func Yellow(msg interface{}, styles ...string) string {
return global.Yellow(msg, styles...)
}
func Blue(msg interface{}, styles ...string) string {
return global.Blue(msg, styles...)
}
func Magenta(msg interface{}, styles ...string) string {
return global.Magenta(msg, styles...)
}
func Cyan(msg interface{}, styles ...string) string {
return global.Cyan(msg, styles...)
}
func White(msg interface{}, styles ...string) string {
return global.White(msg, styles...)
}
func Grey(msg interface{}, styles ...string) string {
return global.Grey(msg, styles...)
}
func BlackBg(msg interface{}, styles ...string) string {
return global.BlackBg(msg, styles...)
}
func RedBg(msg interface{}, styles ...string) string {
return global.RedBg(msg, styles...)
}
func GreenBg(msg interface{}, styles ...string) string {
return global.GreenBg(msg, styles...)
}
func YellowBg(msg interface{}, styles ...string) string {
return global.YellowBg(msg, styles...)
}
func BlueBg(msg interface{}, styles ...string) string {
return global.BlueBg(msg, styles...)
}
func MagentaBg(msg interface{}, styles ...string) string {
return global.MagentaBg(msg, styles...)
}
func CyanBg(msg interface{}, styles ...string) string {
return global.CyanBg(msg, styles...)
}
func WhiteBg(msg interface{}, styles ...string) string {
return global.WhiteBg(msg, styles...)
}
func Reset(msg interface{}, styles ...string) string {
return global.Reset(msg, styles...)
}
func Bold(msg interface{}, styles ...string) string {
return global.Bold(msg, styles...)
}
func Dim(msg interface{}, styles ...string) string {
return global.Dim(msg, styles...)
}
func Italic(msg interface{}, styles ...string) string {
return global.Italic(msg, styles...)
}
func Underline(msg interface{}, styles ...string) string {
return global.Underline(msg, styles...)
}
func Inverse(msg interface{}, styles ...string) string {
return global.Inverse(msg, styles...)
}
func Hidden(msg interface{}, styles ...string) string {
return global.Hidden(msg, styles...)
}
func Strikeout(msg interface{}, styles ...string) string {
return global.Strikeout(msg, styles...)
}