Module: Omnibar::ANSI

Defined in:
lib/omnibar/ansi.rb

Overview

This module contains helpers for various ansi-code operations

Constant Summary collapse

COLORS =

ANSI color escape codes set the foreground and background colors. Forground color is a number between 30 and 37. Background color is a number between 40 and 47. The ones place represents the same color for both.

[:black, :red, :green, :yellow, :blue, :magenta, :cyan, 'white', nil, :white].freeze

Class Method Summary collapse

Class Method Details

.clear_screen ⇒ Object 



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# File 'lib/omnibar/ansi.rb', line 10

def self.clear_screen
  $stdout.write "\e[2J"
end

.color(text, fg: :white, bg: :black) ⇒ Object 



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# File 'lib/omnibar/ansi.rb', line 18

def self.color(text, fg: :white, bg: :black)
  fg = COLORS.index(fg) + 30
  bg = COLORS.index(bg) + 40
  code = "\e[#{[fg, bg].compact.join(';')}m"
  "#{code}#{text}\e[0m"
end

.move_cursor(row, col) ⇒ Object 



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# File 'lib/omnibar/ansi.rb', line 14

def self.move_cursor(row, col)
  $stdout.write "\e[#{row + 1};#{col + 1}H"
end

.reset ⇒ Object 



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# File 'lib/omnibar/ansi.rb', line 25

def self.reset
  "\e[0m"
end

.size ⇒ Object 



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# File 'lib/omnibar/ansi.rb', line 29

def self.size
  win = IO.console.winsize
  {
    height: win[0],
    width: win[1]
  }
end