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require File.join(File.dirname(__FILE__), 'ansi_rgb')
module Sickill
module Rainbow
# Retrieve ANSI color code from a color name, an html color
# or an RGB color
class AnsiColor
# +ground+ is one of :foreground, :background
# +color+ is one of this 3 formats: name, html, rgb
def initialize(ground, *color)
@ground = ground
if color.size == 1
@color = color.first
else
@color = color
end
end
# Get the ANSI color code.
def code
case @color
when Symbol then code_from_name
when String then code_from_html
when Array then code_from_rgb
end
end
private
def code_from_name #:nodoc:
validate_color_name
TERM_COLORS[@color] + (@ground == :foreground ? 30 : 40)
end
def code_from_html #:nodoc:
@color = @color.gsub("#", "")
AnsiRgb.new(@ground, rgb_from_html).code
end
def rgb_from_html #:nodoc:
red = @color[0..1].to_i(16)
green = @color[2..3].to_i(16)
blue = @color[4..5].to_i(16)
[red, green, blue]
end
def code_from_rgb #:nodoc:
unless @color.size == 3
raise ArgumentError.new \
"Bad number of arguments for RGB color definition, should be 3"
end
AnsiRgb.new(@ground, @color).code
end
def validate_color_name #:nodoc:
color_names = TERM_COLORS.keys
unless color_names.include?(@color)
raise ArgumentError.new \
"Unknown color name, valid names: #{color_names.join(', ')}"
end
end
end
end
end
Version data entries
15 entries across 15 versions & 4 rubygems