Class: Col::DB

Inherits:

Object

• Object
• Col::DB

Defined in:

lib/col.rb

Overview

————————————————————————— #

Constant Summary

COLORS =

{
  'B' => :black,
  'r' => :red,
  'g' => :green,
  'y' => :yellow,
  'b' => :blue,
  'm' => :magenta,
  'c' => :cyan,
  'w' => :white
}

STYLES =

{
  'b' => :bold,
  'd' => :dark,
  'i' => :italic,
  'u' => :underline,
  'U' => :underscore,
  'k' => :blink,
  'r' => :rapid_blink,
  'n' => :negative,
  'c' => :concealed,
  's' => :strikethrough,
}

BACKGROUND =

{
  'oB' => :on_black,
  'or' => :on_red,
  'og' => :on_green,
  'oy' => :on_yellow,
  'ob' => :on_blue,
  'om' => :on_magenta,
  'oc' => :on_cyan,
  'ow' => :on_white
}

ALL_METHODS_SYMBOL =

COLORS.values + STYLES.values + BACKGROUND.values

ALL_METHODS_STRING =

ALL_METHODS_SYMBOL.map { |x| x.to_s }

ALL_METHODS =

Class Method Summary

• .background(key) ⇒ Object
• .color(key) ⇒ Object
• .get_value(hash, key, name) ⇒ Object

  If the ‘key’ is nil, we return nil.

• .method?(x) ⇒ Boolean
• .style(key) ⇒ Object

Class Method Details

.background(key) ⇒ Object

# File 'lib/col.rb', line 327

def self.background(key)
  get_value BACKGROUND, key, "background color"
end

.color(key) ⇒ Object

# File 'lib/col.rb', line 319

def self.color(key)
  get_value COLORS, key, "color"
end

.get_value(hash, key, name) ⇒ Object

If the ‘key’ is nil, we return nil. Otherwise, we insist that the key be a valid color, style or background color. If it’s not, we raise an error (that’s what ‘name’ is for).

Return the method name sought: :green, :bold, :on_white, etc.

# File 'lib/col.rb', line 336

def self.get_value(hash, key, name)
  if key.nil?
    nil
  else
    method = hash[key.to_s]
    if method.nil?
      raise Col::Error, "Invalid #{name} code: #{key}"
    end
    method
  end
end

.method?(x) ⇒ Boolean

Returns:

• (Boolean)

# File 'lib/col.rb', line 315

def self.method?(x)
  ALL_METHODS.include? x
end

.style(key) ⇒ Object

# File 'lib/col.rb', line 323

def self.style(key)
  get_value STYLES, key, "style"
end