Terminal string styling for Swift

Colors is a clean and focused solution for string styling in Swift.

Usage

import Colors

print(Colors.blue("Blue string"))
print(Colors.Blue("Bright blue string"))

Addtionaly, you can compose modifiers:

print(Colors.blue(Colors.bgRed("Blue string with red background")))

Or define compositions for convenince:

infix operator >>> { associativity left }
func >>> <A, B, C>(f: B -> C, g: A -> B) -> A -> C {
  return { x in f(g(x)) }
}

var error = Colors.bold >>> Colors.red >>> Colors.underline
print(error("There was an error"))

Installation

CocoaPods

Install cocoapods:

sudo gem install cocoapods

Then specify Colors in your Podfile:

pod 'Colors', '~> 0.1'

Finally run:

pod install

Styles

Bright/Normal Text Colors

• Black/black
• Red/red
• Green/green
• Yellow/yellow
• Blue/blue
• Magenta/magenta
• Cyan/cyan
• White/white

Bright/Normal Background Colors

• BgBlack/bgBlack
• BgRed/bgRed
• BgGreen/bgGreen
• BgYellow/bgYellow
• BgBlue/bgBlue
• BgMagenta/bgMagenta
• BgCyan/bgCyan
• BgWhite/bgWhite

Text modifiers

• blink
• bold
• dim
• italic
• underline
• inverse
• hidden
• strikethrough

##API

Colors.<style>(text: String) -> String

Applies the specified <style> to the given text. For a list of styles check the styles section above.

Colors.underline("Underlined text")

Colors.colorText(text: String, color: Int) -> String

Requires 8-bit color support from the console.

Colors the letters of the given text with the specified color. color must be an integer from 0-255 representing an 8-bit color. For a list of 8-bit colors check here.

Generally useful if you want to color the text with very specific colors.

for i in 0...255 {
    print(Colors.colorText("a", color: i), terminator: "")
}

Outputs:

Colors.colorBg(text: String, color: Int) -> String

Requires 8-bit color support from the console.

Colors the background of the given text with the specified color. color must be an integer from 0-255 representing an 8-bit color. For a list of 8-bit colors check here.

Generally useful if you want to color the background with very specific colors.

for i in 0...255 {
    print(Colors.colorBg(" ", color: i), terminator: "")
}

Outputs:

Colors.getTextColorer(color: Int) -> (String -> String)

Requires 8-bit color support from the console.

Returns a colorer function that will color the characters of the input string with the specified color.

Useful for defining your own style compositions with 8-bit colors.

infix operator >>> { associativity left }
func >>> <A, B, C>(f: B -> C, g: A -> B) -> A -> C {
  return { x in f(g(x)) }
}

let warning = Colors.getTextColorer(23) >>> Colors.underline >>> Colors.BgRed
print(error("Some Warning"))

Colors.getBgColorer(color: Int) -> (String -> String)

Requires 8-bit color support from the console.

Returns a colorer function that will color the background of the input string with the specified color.

Useful for defining your own style compositions with 8-bit colors.

infix operator >>> { associativity left }
func >>> <A, B, C>(f: B -> C, g: A -> B) -> A -> C {
  return { x in f(g(x)) }
}

let info = Colors.getBgColorer(23) >>> Colors.underline >>> Colors.Red
print(info("Some Warning"))

License

MIT © Paulo Tanaka