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module Hbc
class CLI
module Options
def self.included(klass)
klass.extend(ClassMethods)
end
module ClassMethods
def options
@options ||= {}
return @options unless superclass.respond_to?(:options)
superclass.options.merge(@options)
end
def option(name, method, default_value = nil)
@options ||= {}
@options[name] = method
return if method.respond_to?(:call)
define_method(:"#{method}=") do |value|
instance_variable_set(:"@#{method}", value)
end
if [true, false].include?(default_value)
define_method(:"#{method}?") do
return default_value unless instance_variable_defined?(:"@#{method}")
instance_variable_get(:"@#{method}") == true
end
else
define_method(:"#{method}") do
return default_value unless instance_variable_defined?(:"@#{method}")
instance_variable_get(:"@#{method}")
end
end
end
end
def process_arguments(*arguments)
parser = OptionParser.new do |opts|
next if self.class.options.nil?
self.class.options.each do |option_name, option_method|
option_type = case option_name.split(/(\ |\=)/).last
when "PATH"
Pathname
when /\w+(,\w+)+/
Array
end
opts.on(option_name, *option_type) do |value|
if option_method.respond_to?(:call)
option_method.call(value)
else
send(:"#{option_method}=", value)
end
end
end
end
parser.parse(*arguments)
end
end
end
end
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