CLI Color

A command-line color library with true color support, universal API methods and Windows support.

中文说明

Basic color preview:

Features

• Simple to use, zero dependencies
• Supports rich color output: 16-color, 256-color, true color (24-bit)
  • 16-color output is the most commonly used and most widely supported, working on any Windows version
  • See this gist for information on true color support
• Generic API methods: Print, Printf, Println, Sprint, Sprintf
• Supports HTML tag-style color rendering, such as <green>message</>
• Basic colors: Bold, Black, White, Gray, Red, Green, Yellow, Blue, Magenta, Cyan
• Additional styles: Info, Note, Light, Error, Danger, Notice, Success, Comment, Primary, Warning, Question, Secondary

GoDoc

• godoc for gopkg
• godoc for github

Quick start

import "gopkg.in/gookit/color.v1" // is recommended
// or
import "github.com/gookit/color"

package main

import (
	"fmt"
	"github.com/gookit/color"
)

func main() {
	// simple usage
	color.Cyan.Printf("Simple to use %s\n", "color")

	// use like func
	red := color.FgRed.Render
	green := color.FgGreen.Render
	fmt.Printf("%s line %s library\n", red("Command"), green("color"))

	// custom color
	color.New(color.FgWhite, color.BgBlack).Println("custom color style")

	// can also:
	color.Style{color.FgCyan, color.OpBold}.Println("custom color style")

	// internal theme/style:
	color.Info.Tips("message")
	color.Info.Prompt("message")
	color.Info.Println("message")
	color.Warn.Println("message")
	color.Error.Println("message")

	// use style tag
	color.Print("<suc>he</><comment>llo</>, <cyan>wel</><red>come</>\n")

	// apply a style tag
	color.Tag("info").Println("info style text")

	// prompt message
	color.Info.Prompt("prompt style message")
	color.Warn.Prompt("prompt style message")

	// tips message
	color.Info.Tips("tips style message")
	color.Warn.Tips("tips style message")
}

Run demo: go run ./_examples/demo.go

Detailed usage

Basic color

Supported on any Windows version.

• color.Bold
• color.Black
• color.White
• color.Gray
• color.Red
• color.Green
• color.Yellow
• color.Blue
• color.Magenta
• color.Cyan

color.Bold.Println("bold message")
color.Yellow.Println("yellow message")

Run demo: go run ./_examples/basiccolor.go

Additional styles

Supported on any Windows version.

• color.Info
• color.Note
• color.Light
• color.Error
• color.Danger
• color.Notice
• color.Success
• color.Comment
• color.Primary
• color.Warning
• color.Question
• color.Secondary

// print message
color.Info.Print("Info message")
color.Success.Print("Success message")

// prompt message
color.Info.Prompt("prompt style message")
color.Warn.Prompt("prompt style message")

// tips message
color.Info.Tips("tips style message")
color.Warn.Tips("tips style message")

Run demo: go run ./_examples/theme_style.go

HTML-like tag usage

Not supported on Windows (tags will be stripped).

// use style tag
color.Print("<suc>he</><comment>llo</>, <cyan>wel</><red>come</>")
color.Println("<suc>hello</>")
color.Println("<error>hello</>")
color.Println("<warning>hello</>")

// custom color attributes
color.Print("<fg=yellow;bg=black;op=underscore;>hello, welcome</>\n")

• color.Tag

// set a style tag
color.Tag("info").Print("info style text")
color.Tag("info").Printf("%s style text", "info")
color.Tag("info").Println("info style text")

Run demo: go run ./_examples/colortag.go

256-color usage

Set the foreground or background color

• color.C256(val uint8, isBg ...bool) Color256

c := color.C256(132) // fg color
c.Println("message")
c.Printf("format %s", "message")

c := color.C256(132, true) // bg color
c.Println("message")
c.Printf("format %s", "message")

Use a 256-color style

Can be used to set foreground and background colors at the same time.

• color.S256(fgAndBg ...uint8) *Style256

s := color.S256(32, 203)
s.Println("message")
s.Printf("format %s", "message")

Run demo: go run ./_examples/color256.go

Use RGB color

Set the foreground or background color

• color.RGB(r, g, b uint8, isBg ...bool) RGBColor

c := color.RGB(30,144,255) // fg color
c.Println("message")
c.Printf("format %s", "message")

c := color.RGB(30,144,255, true) // bg color
c.Println("message")
c.Printf("format %s", "message")

Create a style from an hexadecimal color string:

• color.HEX(hex string, isBg ...bool) RGBColor

c := HEX("ccc") // can also: "cccccc" "#cccccc"
c.Println("message")
c.Printf("format %s", "message")

c = HEX("aabbcc", true) // as bg color
c.Println("message")
c.Printf("format %s", "message")

Use a RGB color style

Can be used to set the foreground and background colors at the same time.

• color.NewRGBStyle(fg RGBColor, bg ...RGBColor) *RGBStyle

s := NewRGBStyle(RGB(20, 144, 234), RGB(234, 78, 23))
s.Println("message")
s.Printf("format %s", "message")

Create a style from an hexadecimal color string:

• color.HEXStyle(fg string, bg ...string) *RGBStyle

s := HEXStyle("11aa23", "eee")
s.Println("message")
s.Printf("format %s", "message")

See also

• issue9/term
• beego/bee
• inhere/console
• ANSI escape code

License

MIT