class Mercenary::Presenter
Attributes
Public Class Methods
Public: Make a new Presenter
command - a Mercenary::Command
to present
Returns nothing
# File lib/mercenary/presenter.rb, line 12 def initialize(command) @command = command end
Public Instance Methods
Public: Builds the command header, including the command identity and description
Returns the command header as a String
# File lib/mercenary/presenter.rb, line 62 def command_header header = command.identity.to_s header << " -- #{command.description}" if command.description header end
# File lib/mercenary/presenter.rb, line 32 def command_options_presentation return nil if command.options.empty? options = command.options options -= command.parent.options if command.parent options.map(&:to_s).join("\n") end
Public: Builds a string representation of the whole command
Returns the string representation of the whole command
# File lib/mercenary/presenter.rb, line 71 def command_presentation msg = [] msg << command_header msg << "Usage:" msg << usage_presentation if opts = options_presentation msg << "Options:\n#{opts}" end if subcommands = subcommands_presentation msg << "Subcommands:\n#{subcommands_presentation}" end msg.join("\n\n") end
Public: Turn a print_* into a *_presentation or freak out
meth - the method being called args - an array of arguments passed to the missing method block - the block passed to the missing method
Returns the value of whatever function is called
# File lib/mercenary/presenter.rb, line 93 def method_missing(meth, *args, &block) if meth.to_s =~ %r!^print_(.+)$! send("#{Regexp.last_match(1).downcase}_presentation") else # You *must* call super if you don't handle the method, # otherwise you'll mess up Ruby's method lookup. super end end
Public: Builds a string representation of the options
Returns the string representation of the options
# File lib/mercenary/presenter.rb, line 26 def options_presentation return nil unless command_options_presentation || parent_command_options_presentation [command_options_presentation, parent_command_options_presentation].compact.join("\n") end
Public: Builds a string representation of the options for parent commands
Returns the string representation of the options for parent commands
# File lib/mercenary/presenter.rb, line 44 def parent_command_options_presentation return nil unless command.parent Presenter.new(command.parent).options_presentation end
Public: Builds a string representation of the subcommands
Returns the string representation of the subcommands
# File lib/mercenary/presenter.rb, line 53 def subcommands_presentation return nil if command.commands.empty? command.commands.values.uniq.map(&:summarize).join("\n") end
Public: Builds a string representation of the command usage
Returns the string representation of the command usage
# File lib/mercenary/presenter.rb, line 19 def usage_presentation " #{command.syntax}" end