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module GLI # Abstract base class for a logical element of a command line, mostly so that subclasses can have similar # initialization and interface class CommandLineToken attr_reader :name #:nodoc: attr_reader :aliases #:nodoc: attr_reader :description #:nodoc: attr_reader :long_description #:nodoc: def initialize(names,description,long_description=nil) #:nodoc: @description = description @long_description = long_description @name,@aliases,@names = parse_names(names) end def usage #:nodoc: all_forms end # Sort based on primary name def <=>(other) self.name.to_s <=> other.name.to_s end private # Returns a string of all possible forms # of this flag. Mostly intended for printing # to the user. def all_forms(joiner=', ') forms = all_forms_a forms.join(joiner) end # Handles dealing with the "names" param, parsing # it into the primary name and aliases list def parse_names(names) # Allow strings; convert to symbols names = [names].flatten.map { |name| name.to_sym } names_hash = {} names.each do |name| raise ArgumentError.new("#{name} has spaces; they are not allowed") if name.to_s =~ /\s/ names_hash[self.class.name_as_string(name)] = true end name = names.shift aliases = names.length > 0 ? names : nil [name,aliases,names_hash] end def negatable? false; end def all_forms_a forms = [self.class.name_as_string(name,negatable?)] if aliases forms |= aliases.map { |one_alias| self.class.name_as_string(one_alias,negatable?) }.sort { |one,two| one.length <=> two.length } end forms end end end
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21 entries across 21 versions & 1 rubygems