Class: Async::Terminal

Inherits:
Object
  • Object
show all
Defined in:
lib/async/terminal.rb

Overview

Styled terminal output. Internal Use Only

Defined Under Namespace

Modules: Attributes, Colors

Instance Method Summary collapse

Constructor Details

#initialize(output) ⇒ Terminal

Returns a new instance of Terminal.



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# File 'lib/async/terminal.rb', line 47

def initialize(output)
	@output = output
end

Instance Method Details

#color(foreground, background = nil, attributes = nil) ⇒ Object 



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# File 'lib/async/terminal.rb', line 55

def color(foreground, background = nil, attributes = nil)
	return nil unless tty?
	
	buffer = String.new
	
	buffer << "\e["
	first = true
	
	if attributes
		buffer << (attributes).to_s
		first = false
	end
	
	if foreground
		if !first
			buffer << ";" 
		else
			first = false
		end
		
		buffer << (30 + foreground).to_s
	end
	
	if background
		if !first
			buffer << ";" 
		else
			first = false
		end
		
		buffer << (40 + background).to_s
	end
	
	buffer << 'm'
	
	return buffer
end

#reset ⇒ Object 



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# File 'lib/async/terminal.rb', line 93

def reset
	return nil unless tty?
	
	return "\e[0m"
end

#tty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/async/terminal.rb', line 51

def tty?
	@output.isatty
end