Class: Harp::CommandManager

Inherits:
Object
  • Object
show all
Defined in:
lib/harp/command_manager.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ CommandManager

Returns a new instance of CommandManager.



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# File 'lib/harp/command_manager.rb', line 6

def initialize
  @commands = {}
end

Instance Attribute Details

#commands ⇒ Object (readonly)

Returns the value of attribute commands.



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# File 'lib/harp/command_manager.rb', line 5

def commands
  @commands
end

Instance Method Details

#command(command_name, *spec, &block) ⇒ Object 



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# File 'lib/harp/command_manager.rb', line 27

def command(command_name, *spec, &block)
  names = [command_name]
  if spec.last.is_a?(Hash)
    options = spec.pop
    if command_alias = options[:alias]
      names << command_alias
    end
  end
  names.each do |name|
    command = @commands[name] ||= Command.new(name)
    command.add_spec(spec, block)
  end
end

#command_names ⇒ Object 



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# File 'lib/harp/command_manager.rb', line 41

def command_names
  @commands.keys.sort
end

#find_command(name, args) ⇒ Object 



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# File 'lib/harp/command_manager.rb', line 15

def find_command(name, args)
  if command = @commands[name]
    if block = command.block_for(args)
      return block
    else
      raise ArgumentError, "Invalid arguments for command."
    end
  else
    raise ArgumentError, "Command not found: '#{name}'."
  end
end

#handle(name, args, context) ⇒ Object 



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# File 'lib/harp/command_manager.rb', line 10

def handle(name, args, context)
  block = find_command(name, args)
  context.instance_exec(args, &block)
end