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Contents
require 'whirled_peas/utils/ansi'
module WhirledPeas
module Settings
# An abstract class that encapsulates colors for a specific use case
class Color
# Validate the `color` argument is either (1) nil, (2) a valid Color constant in
# this class or (3) a symbol that maps to valid Color constant. E.g. if there
# is a RED constant in an implementing class, then :red or :bright_red are
# valid values for `color`
#
# @param color [Color|Symbol]
# @return [Color|Symbol] the value passed in if valid, otherwise an ArgumentError
# is raised.
def self.validate!(color)
return if color.nil?
return color if color.is_a?(self)
if color.is_a?(Symbol)
match = color.to_s.match(/^(bright_)?(\w+)$/)
color_class = self.const_get(match[2].upcase)
if color_class.is_a?(self)
if !match[1]
return color_class
elsif !color_class.bright?
return color_class.bright
end
end
end
error_message = "Unsupported #{self.name.split('::').last}: #{color.inspect}"
raise ArgumentError, error_message
rescue NameError
error_message = "Unsupported #{self.name.split('::').last}: #{color.inspect}"
raise ArgumentError, error_message
end
def initialize(code, bright=false)
@code = code
@bright = bright
end
def bright?
@bright
end
def bright
bright? ? self : self.class.new(@code + Utils::Ansi::BRIGHT_OFFSET, true)
end
def hash
[@code, @bright].hash
end
def ==(other)
other.is_a?(self.class) && self.hash == other.hash
end
alias_method :eq?, :==
def to_s
@code.to_s
end
def inspect
"#{self.class.name.split('::').last}(code=#{@code}, bright=#{@bright})"
end
end
private_constant :Color
end
end
Version data entries
7 entries across 7 versions & 1 rubygems