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Contents
module Vedeu
# Allows the storing of HTML/CSS colours and their respective escape
# sequences.
class Colours
# @!attribute [r] storage
# @return [Hash<String => String>]
attr_reader :storage
# Returns a new instance of Vedeu::Colours.
#
# @return [Vedeu::Colours]
def initialize
@storage = {}
end
# Registers a colour with respective escape sequence.
#
# @return [String]
def register(colour, escape_sequence)
storage.store(colour, escape_sequence)
end
# Returns a boolean indicating whether the colour has been registered.
#
# @param colour [String]
# @return [Boolean]
def registered?(colour)
return false unless colour
storage.key?(colour)
end
# Removes all stored colours.
#
# @return [Hash]
def reset!
storage.clear
end
# Retrieves the escape sequence of a registered colour.
#
# @return [String]
def retrieve(colour)
storage.fetch(colour, '')
end
# Retrieves the escape sequence of a registered colour, or registers the
# colour with its respective escape sequence.
#
# @return [String]
def retrieve_or_register(colour, escape_sequence)
if registered?(colour)
retrieve(colour)
else
register(colour, escape_sequence)
end
end
end # Colours
end # Vedeu
Version data entries
10 entries across 10 versions & 1 rubygems