mirror of https://github.com/k3s-io/k3s
179 lines
2.7 KiB
Markdown
179 lines
2.7 KiB
Markdown
# aec
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[](https://godoc.org/github.com/morikuni/aec)
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Go wrapper for ANSI escape code.
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## Install
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```bash
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go get github.com/morikuni/aec
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```
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## Features
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ANSI escape codes depend on terminal environment.
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Some of these features may not work.
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Check supported Font-Style/Font-Color features with [checkansi](./checkansi).
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[Wikipedia](https://en.wikipedia.org/wiki/ANSI_escape_code) for more detail.
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### Cursor
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- `Up(n)`
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- `Down(n)`
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- `Right(n)`
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- `Left(n)`
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- `NextLine(n)`
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- `PreviousLine(n)`
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- `Column(col)`
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- `Position(row, col)`
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- `Save`
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- `Restore`
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- `Hide`
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- `Show`
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- `Report`
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### Erase
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- `EraseDisplay(mode)`
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- `EraseLine(mode)`
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### Scroll
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- `ScrollUp(n)`
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- `ScrollDown(n)`
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### Font Style
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- `Bold`
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- `Faint`
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- `Italic`
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- `Underline`
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- `BlinkSlow`
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- `BlinkRapid`
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- `Inverse`
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- `Conceal`
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- `CrossOut`
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- `Frame`
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- `Encircle`
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- `Overline`
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### Font Color
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Foreground color.
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- `DefaultF`
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- `BlackF`
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- `RedF`
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- `GreenF`
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- `YellowF`
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- `BlueF`
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- `MagentaF`
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- `CyanF`
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- `WhiteF`
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- `LightBlackF`
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- `LightRedF`
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- `LightGreenF`
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- `LightYellowF`
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- `LightBlueF`
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- `LightMagentaF`
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- `LightCyanF`
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- `LightWhiteF`
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- `Color3BitF(color)`
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- `Color8BitF(color)`
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- `FullColorF(r, g, b)`
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Background color.
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- `DefaultB`
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- `BlackB`
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- `RedB`
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- `GreenB`
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- `YellowB`
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- `BlueB`
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- `MagentaB`
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- `CyanB`
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- `WhiteB`
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- `LightBlackB`
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- `LightRedB`
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- `LightGreenB`
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- `LightYellowB`
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- `LightBlueB`
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- `LightMagentaB`
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- `LightCyanB`
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- `LightWhiteB`
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- `Color3BitB(color)`
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- `Color8BitB(color)`
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- `FullColorB(r, g, b)`
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### Color Converter
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24bit RGB color to ANSI color.
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- `NewRGB3Bit(r, g, b)`
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- `NewRGB8Bit(r, g, b)`
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### Builder
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To mix these features.
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```go
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custom := aec.EmptyBuilder.Right(2).RGB8BitF(128, 255, 64).RedB().ANSI
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custom.Apply("Hello World")
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```
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## Usage
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1. Create ANSI by `aec.XXX().With(aec.YYY())` or `aec.EmptyBuilder.XXX().YYY().ANSI`
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2. Print ANSI by `fmt.Print(ansi, "some string", aec.Reset)` or `fmt.Print(ansi.Apply("some string"))`
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`aec.Reset` should be added when using font style or font color features.
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## Example
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Simple progressbar.
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```go
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package main
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import (
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"fmt"
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"strings"
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"time"
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"github.com/morikuni/aec"
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)
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func main() {
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const n = 20
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builder := aec.EmptyBuilder
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up2 := aec.Up(2)
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col := aec.Column(n + 2)
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bar := aec.Color8BitF(aec.NewRGB8Bit(64, 255, 64))
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label := builder.LightRedF().Underline().With(col).Right(1).ANSI
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// for up2
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fmt.Println()
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fmt.Println()
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for i := 0; i <= n; i++ {
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fmt.Print(up2)
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fmt.Println(label.Apply(fmt.Sprint(i, "/", n)))
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fmt.Print("[")
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fmt.Print(bar.Apply(strings.Repeat("=", i)))
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fmt.Println(col.Apply("]"))
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time.Sleep(100 * time.Millisecond)
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}
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}
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```
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## License
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[MIT](./LICENSE)
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