FIGlet for Go

figlet4go is a go library which is a port of FIGlet to Golang.
With figlet4go it's easy to create ascii text banners in the command-line or with the given api.

This Repository used to be a fork of getwe/figlet4go, but I changed so much that it's not compatible anymore

Installation

$ go get -u github.com/mbndr/figlet4go/...

Usage

Command-line

You can use the figlet4go command in the command-line.
For example (generates the banner on top):

$ figlet4go -str "figlet4go" -font "larry3d" -colors "green;FF9900;cyan"

For a usage instruction read the commands usage with figlet4go -h.

Basic

You have to create a renderer (ascii) and let it render the desired string through the Render method. After that you can simply print the returned string.

import "github.com/mbndr/figlet4go"

// ...

ascii := figlet4go.NewAsciiRender()

// The underscore would be an error
renderStr, _ := ascii.Render("Hello World")
fmt.Print(renderStr)

Colored

The colors given in the []figlet4go.Color slice are repeating if the string is longer than the slice. You have to call the RenderOpts instead of the Render method to give the Renderer the Options.
If you use a TrueColor color, you have to ensure that your terminal supports it.
If you use a AnsiColor with an TrueColor only parser (f.e. ParserHTML), TrueColor objects are automatically generated.

import "github.com/mbndr/figlet4go"

// ...

ascii := figlet4go.NewAsciiRender()

// Adding the colors to RenderOptions
options := figlet4go.NewRenderOptions()
options.FontColor = []figlet4go.Color{
	// Colors can be given by default ansi color codes...
	figlet4go.ColorGreen,
	figlet4go.ColorYellow,
	figlet4go.ColorCyan,
	// ...or by an hex string...
	figlet4go.NewTrueColorFromHexString("885DBA"),
	// ...or by an TrueColor object with rgb values
	figlet4go.TrueColor{136, 93, 186},
}

renderStr, _ := ascii.RenderOpts("Hello Colors", options)
fmt.Print(renderStr)

Other font

If you want to use another font, you have to specify the name of the font as in this example.
Is the font you want to use not included you have to load the font manually with the LoadFont method. This method will walk the path recursively and load all .flf files.

import "github.com/mbndr/figlet4go"

// ...

ascii := figlet4go.NewAsciiRender()

options := figlet4go.NewRenderOptions()
options.FontName = "larry3d"

// If 'larry3d' wouldn't be included you would have to load your .flf files like that:
ascii.LoadFont("/path/to/fonts/")

renderStr, _ := ascii.RenderOpts("Hello Fonts", options)
fmt.Print(renderStr)

Other parser

A Parser can be set through the GetParser function with a valid key

import "github.com/mbndr/figlet4go"

// ...

ascii := figlet4go.NewAsciiRender()

options := figlet4go.NewRenderOptions()
p, _ := figlet4go.GetParser("html")
options.Parser = *p

renderStr, _ := ascii.RenderOpts("Hello Fonts", options)
fmt.Print(renderStr)

Parsers

There a currently these Parsers available:

Parser	What does it do?
ParserTerminal	Parses the result directly
ParserHTML	Parses a pasteable <code> html block

Fonts

Builtin

The builtin fonts are built into the bindata.go file with the tool go-bindata.
The bash script for building the default font is stored in tools/ (go-bindata must be installed).

The default font is standard. These are the builtin fonts:

Font name	Source
standard	http://www.figlet.org/fontdb_example.cgi?font=standard.flf
larry3d	http://www.figlet.org/fontdb_example.cgi?font=larry3d.flf

Other fonts

Other fonts can mainly be found on figlet. You have to load them as in this example.

Todo

• Tests
• automatically the perfect char margin
• Linebreak possible?
• Pointer-Value standarization
• Parser as interface
• Cli client
• Colors in the cli client
• No dependencies (fatih/color)
• Truecolor support
• More parsers (HTML)
• Better parsers (maybe stored in a map)
• Writer choosing for writing to file