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Description

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

Programming language: Go
License: MIT License
Latest version: v1.3.5

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README

CLI Color

GitHub go.mod Go version Actions Status Codacy Badge GoDoc GitHub tag (latest SemVer) Build Status Coverage Status Go Report Card

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

[中文说明](README.zh-CN.md)

Basic color preview:

[basic-color](_examples/images/basic-color2.png)

Now, 256 colors and RGB colors have also been supported to work in Windows CMD and PowerShell:

[color-on-cmd-pwsh](_examples/images/color-on-cmd-pwsh.jpg)

Features

  • Simple to use, zero dependencies
  • Supports rich color output: 16-color (4-bit), 256-color (8-bit), true color (24-bit, RGB)
    • 16-color output is the most commonly used and most widely supported, working on any Windows version
    • Since v1.2.4 the 256-color (8-bit), true color (24-bit) support windows CMD and PowerShell
    • 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</>.
    • In addition to using built-in tags, it also supports custom color attributes
    • Custom color attributes support the use of 16 color names, 256 color values, rgb color values and hex color values
    • Support working on Windows cmd and powerShell terminal
  • 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
  • Support by set NO_COLOR for disable color or use FORCE_COLOR for force open color render.
  • Support Rgb, 256, 16 color conversion

GoDoc

Install

go get github.com/gookit/color

Quick start

package main

import (
    "fmt"

    "github.com/gookit/color"
)

func main() {
    // quick use package func
    color.Redp("Simple to use color")
    color.Redln("Simple to use color")
    color.Greenp("Simple to use color\n")
    color.Cyanln("Simple to use color")
    color.Yellowln("Simple to use color")

    // quick use like fmt.Print*
    color.Red.Println("Simple to use color")
    color.Green.Print("Simple to use color\n")
    color.Cyan.Printf("Simple to use %s\n", "color")
    color.Yellow.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")
    // Custom label attr: Supports the use of 16 color names, 256 color values, rgb color values and hex color values
    color.Println("<fg=11aa23>he</><bg=120,35,156>llo</>, <fg=167;bg=232>wel</><fg=red>come</>")

    // 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

[colored-out](_examples/images/color-demo.jpg)

Basic/16 color

Supported on any Windows version. Provide generic API methods: Print, Printf, Println, Sprint, Sprintf

color.Bold.Println("bold message")
color.Black.Println("bold message")
color.White.Println("bold message")
color.Gray.Println("bold message")
color.Red.Println("yellow message")
color.Blue.Println("yellow message")
color.Cyan.Println("yellow message")
color.Yellow.Println("yellow message")
color.Magenta.Println("yellow message")

// Only use foreground color
color.FgCyan.Printf("Simple to use %s\n", "color")
// Only use background color
color.BgRed.Printf("Simple to use %s\n", "color")

Run demo: go run ./_examples/color_16.go

[basic-color](_examples/images/basic-color.png)

Custom build color

// Full custom: foreground, background, option
myStyle := color.New(color.FgWhite, color.BgBlack, color.OpBold)
myStyle.Println("custom color style")

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

custom set console settings:

// set console color
color.Set(color.FgCyan)

// print message
fmt.Print("message")

// reset console settings
color.Reset()

Additional styles

provide generic API methods: Print, Printf, Println, Sprint, Sprintf

print message use defined style:

color.Info.Println("Info message")
color.Note.Println("Note message")
color.Notice.Println("Notice message")
color.Error.Println("Error message")
color.Danger.Println("Danger message")
color.Warn.Println("Warn message")
color.Debug.Println("Debug message")
color.Primary.Println("Primary message")
color.Question.Println("Question message")
color.Secondary.Println("Secondary message")

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

[theme-basic](_examples/images/theme-basic.png)

Tips style

color.Info.Tips("Info tips message")
color.Note.Tips("Note tips message")
color.Notice.Tips("Notice tips message")
color.Error.Tips("Error tips message")
color.Danger.Tips("Danger tips message")
color.Warn.Tips("Warn tips message")
color.Debug.Tips("Debug tips message")
color.Primary.Tips("Primary tips message")
color.Question.Tips("Question tips message")
color.Secondary.Tips("Secondary tips message")

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

[theme-tips](_examples/images/theme-tips.png)

Prompt Style

color.Info.Prompt("Info prompt message")
color.Note.Prompt("Note prompt message")
color.Notice.Prompt("Notice prompt message")
color.Error.Prompt("Error prompt message")
color.Danger.Prompt("Danger prompt message")
color.Warn.Prompt("Warn prompt message")
color.Debug.Prompt("Debug prompt message")
color.Primary.Prompt("Primary prompt message")
color.Question.Prompt("Question prompt message")
color.Secondary.Prompt("Secondary prompt message")

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

[theme-prompt](_examples/images/theme-prompt.png)

Block Style

color.Info.Block("Info block message")
color.Note.Block("Note block message")
color.Notice.Block("Notice block message")
color.Error.Block("Error block message")
color.Danger.Block("Danger block message")
color.Warn.Block("Warn block message")
color.Debug.Block("Debug block message")
color.Primary.Block("Primary block message")
color.Question.Block("Question block message")
color.Secondary.Block("Secondary block message")

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

[theme-block](_examples/images/theme-block.png)

256-color usage

256 colors support Windows CMD, PowerShell environment after v1.2.4

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")

256-color style

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

  • S256(fgAndBg ...uint8) *Style256
s := color.S256(32, 203)
s.Println("message")
s.Printf("format %s", "message")

with options:

s := color.S256(32, 203)
s.SetOpts(color.Opts{color.OpBold})

s.Println("style with options")
s.Printf("style with %s\n", "options")

Run demo: go run ./_examples/color_256.go

[color-tags](_examples/images/color-256.png)

RGB/True color

RGB colors support Windows CMD, PowerShell environment after v1.2.4

Preview:

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

[color-rgb](_examples/images/color-rgb.png)

example:

color.RGB(30, 144, 255).Println("message. use RGB number")

color.HEX("#1976D2").Println("blue-darken")
color.HEX("#D50000", true).Println("red-accent. use HEX style")

color.RGBStyleFromString("213,0,0").Println("red-accent. use RGB number")
color.HEXStyle("eee", "D50000").Println("deep-purple 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 := color.HEX("ccc") // can also: "cccccc" "#cccccc"
c.Println("message")
c.Printf("format %s", "message")

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

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

with options:

s := color.HEXStyle("11aa23", "eee")
s.SetOpts(color.Opts{color.OpBold})

s.Println("style with options")
s.Printf("style with %s\n", "options")

HTML-like tag usage

Supported on Windows cmd.exe PowerShell .

// 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")

// Custom label attr: Supports the use of 16 color names, 256 color values, rgb color values and hex color values
color.Println("<fg=11aa23>he</><bg=120,35,156>llo</>, <fg=167;bg=232>wel</><fg=red>come</>")
  • 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/color_tag.go

[color-tags](_examples/images/color-tags.png)

Color convert

Supports conversion between Rgb, 256, 16 colors, Rgb <=> 256 <=> 16

basic := color.Red
basic.Println("basic color")

c256 := color.Red.C256()
c256.Println("256 color")
c256.C16().Println("basic color")

rgb := color.Red.RGB()
rgb.Println("rgb color")
rgb.C256().Println("256 color")

Func refer

There are some useful functions reference

  • Disable() disable color render
  • SetOutput(io.Writer) custom set the colored text output writer
  • ForceOpenColor() force open color render
  • Colors2code(colors ...Color) string Convert colors to code. return like "32;45;3"
  • ClearCode(str string) string Use for clear color codes
  • ClearTag(s string) string clear all color html-tag for a string
  • IsConsole(w io.Writer) Determine whether w is one of stderr, stdout, stdin
  • HexToRgb(hex string) (rgb []int) Convert hex color string to RGB numbers
  • RgbToHex(rgb []int) string Convert RGB to hex code
  • More useful func please see https://pkg.go.dev/github.com/gookit/color

Project use

Check out these projects, which use https://github.com/gookit/color :

Gookit packages

  • gookit/ini Go config management, use INI files
  • gookit/rux Simple and fast request router for golang HTTP
  • gookit/gcli build CLI application, tool library, running CLI commands
  • gookit/slog Concise and extensible go log library
  • gookit/event Lightweight event manager and dispatcher implements by Go
  • gookit/cache Generic cache use and cache manager for golang. support File, Memory, Redis, Memcached.
  • gookit/config Go config management. support JSON, YAML, TOML, INI, HCL, ENV and Flags
  • gookit/color A command-line color library with true color support, universal API methods and Windows support
  • gookit/filter Provide filtering, sanitizing, and conversion of golang data
  • gookit/validate Use for data validation and filtering. support Map, Struct, Form data
  • gookit/goutil Some utils for the Go: string, array/slice, map, format, cli, env, filesystem, test and more
  • More, please see https://github.com/gookit

See also

License

MIT


*Note that all licence references and agreements mentioned in the CLI Color README section above are relevant to that project's source code only.