aec

Go wrapper for ANSI escape code.

Install

go get github.com/morikuni/aec

Features

ANSI escape codes depend on terminal environment.
Some of these features may not work.
Check supported Font-Style/Font-Color features with checkansi.

Wikipedia for more detail.

Cursor

Up(n)
Down(n)
Right(n)
Left(n)
NextLine(n)
PreviousLine(n)
Column(col)
Position(row, col)
Save
Restore
Hide
Show
Report

Erase

EraseDisplay(mode)
EraseLine(mode)

Scroll

ScrollUp(n)
ScrollDown(n)

Font Style

Bold
Faint
Italic
Underline
BlinkSlow
BlinkRapid
Inverse
Conceal
CrossOut
Frame
Encircle
Overline

Font Color

Foreground color.

DefaultF
BlackF
RedF
GreenF
YellowF
BlueF
MagentaF
CyanF
WhiteF
LightBlackF
LightRedF
LightGreenF
LightYellowF
LightBlueF
LightMagentaF
LightCyanF
LightWhiteF
Color3BitF(color)
Color8BitF(color)
FullColorF(r, g, b)

Background color.

DefaultB
BlackB
RedB
GreenB
YellowB
BlueB
MagentaB
CyanB
WhiteB
LightBlackB
LightRedB
LightGreenB
LightYellowB
LightBlueB
LightMagentaB
LightCyanB
LightWhiteB
Color3BitB(color)
Color8BitB(color)
FullColorB(r, g, b)

Color Converter

24bit RGB color to ANSI color.

NewRGB3Bit(r, g, b)
NewRGB8Bit(r, g, b)

Builder

To mix these features.

custom := aec.EmptyBuilder.Right(2).RGB8BitF(128, 255, 64).RedB().ANSI
custom.Apply("Hello World")

Usage

Create ANSI by aec.XXX().With(aec.YYY()) or aec.EmptyBuilder.XXX().YYY().ANSI
Print ANSI by fmt.Print(ansi, "some string", aec.Reset) or fmt.Print(ansi.Apply("some string"))

aec.Reset should be added when using font style or font color features.

Example

Simple progressbar.

package main

import (
	"fmt"
	"strings"
	"time"

	"github.com/morikuni/aec"
)

func main() {
	const n = 20
	builder := aec.EmptyBuilder

	up2 := aec.Up(2)
	col := aec.Column(n + 2)
	bar := aec.Color8BitF(aec.NewRGB8Bit(64, 255, 64))
	label := builder.LightRedF().Underline().With(col).Right(1).ANSI

	// for up2
	fmt.Println()
	fmt.Println()

	for i := 0; i <= n; i++ {
		fmt.Print(up2)
		fmt.Println(label.Apply(fmt.Sprint(i, "/", n)))
		fmt.Print("[")
		fmt.Print(bar.Apply(strings.Repeat("=", i)))
		fmt.Println(col.Apply("]"))
		time.Sleep(100 * time.Millisecond)
	}
}

License

MIT

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aec