Module: Polytrix::Color

Defined in:

lib/polytrix/color.rb

Constant Summary

ANSI =

{
  reset: 0, black: 30, red: 31, green: 32, yellow: 33,
  blue: 34, magenta: 35, cyan: 36, white: 37,
  bright_black: 90, bright_red: 91, bright_green: 92,
  bright_yellow: 93, bright_blue: 94, bright_magenta: 95,
  bright_cyan: 96, bright_white: 97
}.freeze

COLORS =

%w(
  cyan yellow green magenta blue bright_cyan bright_yellow
  bright_green bright_magenta bright_blue
).freeze

Class Method Summary

• .colorize(str, name) ⇒ String

  Returns a colorized ansi escaped string with the given color.

• .escape(name) ⇒ String

  Returns an ansi escaped string representing a color control sequence.

Class Method Details

.colorize(str, name) ⇒ String

Returns a colorized ansi escaped string with the given color.

Parameters:

• str (String) —

  a string to colorize

• name (Symbol) —

  a valid color representation, taken from Polytrix::Color::ANSI

Returns:

• (String) —

  an ansi escaped string if the color is valid and an unescaped string otherwise

# File 'lib/polytrix/color.rb', line 35

def self.colorize(str, name)
  color = escape(name)
  color.empty? ? str : "#{color}#{str}#{escape(:reset)}"
end

.escape(name) ⇒ String

Returns an ansi escaped string representing a color control sequence.

Parameters:

• name (Symbol) —

  a valid color representation, taken from Polytrix::Color::ANSI

Returns:

• (String) —

  an ansi escaped string if the color is valid and an empty string otherwise

# File 'lib/polytrix/color.rb', line 22

def self.escape(name)
  return '' if name.nil?
  return '' unless ANSI[name]
  "\e[#{ANSI[name]}m"
end