u/Shell.go at master · ssgo/u · GitHub

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package u

import (
	"fmt"
	"runtime"
	"strconv"
	"strings"
)

type AttribCode int

const (
	AttrNone AttribCode = iota
	AttrBold
	AttrDim
	AttrItalic
	AttrUnderline
	AttrBlink
	AttrFastBlink
	AttrReverse
	AttrHidden
	AttrCrossedOut
)

type TextColor int

const (
	TextBlack TextColor = iota + 30
	TextRed
	TextGreen
	TextYellow
	TextBlue
	TextMagenta
	TextCyan
	TextWhite
	TextNone TextColor = 0
)

type BgColor int

const (
	BgBlack BgColor = iota + 40
	BgRed
	BgGreen
	BgYellow
	BgBlue
	BgMagenta
	BgCyan
	BgWhite
	BgNone BgColor = 0
)

func Black(s interface{}, attribs ...AttribCode) string {
	return Color(s, TextBlack, BgNone, attribs...)
}
func Red(s interface{}, attribs ...AttribCode) string {
	return Color(s, TextRed, BgNone, attribs...)
}
func Green(s interface{}, attribs ...AttribCode) string {
	return Color(s, TextGreen, BgNone, attribs...)
}
func Yellow(s interface{}, attribs ...AttribCode) string {
	return Color(s, TextYellow, BgNone, attribs...)
}
func Blue(s interface{}, attribs ...AttribCode) string {
	return Color(s, TextBlue, BgNone, attribs...)
}
func Magenta(s interface{}, attribs ...AttribCode) string {
	return Color(s, TextMagenta, BgNone, attribs...)
}
func Cyan(s interface{}, attribs ...AttribCode) string {
	return Color(s, TextCyan, BgNone, attribs...)
}
func White(s interface{}, attribs ...AttribCode) string {
	return Color(s, TextWhite, BgNone, attribs...)
}
func Dim(s interface{}) string {
	return Color(s, TextWhite, BgNone, AttrDim)
}
func Italic(s interface{}) string {
	return Color(s, TextWhite, BgNone, AttrItalic)
}

func BBlack(s interface{}, attribs ...AttribCode) string {
	return Color(s, TextWhite, BgBlack, attribs...)
}
func BRed(s interface{}, attribs ...AttribCode) string {
	return Color(s, TextWhite, BgRed, attribs...)
}
func BGreen(s interface{}, attribs ...AttribCode) string {
	return Color(s, TextBlack, BgGreen, attribs...)
}
func BYellow(s interface{}, attribs ...AttribCode) string {
	return Color(s, TextBlack, BgYellow, attribs...)
}
func BBlue(s interface{}, attribs ...AttribCode) string {
	return Color(s, TextWhite, BgBlue, attribs...)
}
func BMagenta(s interface{}, attribs ...AttribCode) string {
	return Color(s, TextWhite, BgMagenta, attribs...)
}
func BCyan(s interface{}, attribs ...AttribCode) string {
	return Color(s, TextBlack, BgCyan, attribs...)
}
func BWhite(s interface{}, attribs ...AttribCode) string {
	return Color(s, TextBlack, BgWhite, attribs...)
}

func Color(s interface{}, textColor TextColor, bgColor BgColor, attribs ...AttribCode) string {
	if runtime.GOOS == "windows" {
		return String(s)
	}

	sets := make([]string, 0)
	for _, attr := range attribs {
		sets = append(sets, strconv.Itoa(int(attr)))
	}
	if textColor != TextNone {
		sets = append(sets, strconv.Itoa(int(textColor)))
	}
	if bgColor != BgNone {
		sets = append(sets, strconv.Itoa(int(bgColor)))
	}

	return fmt.Sprint("\033[", strings.Join(sets, ";"), "m", String(s), "\033[0m")
}