Class: MDT::Helpers::Command

Inherits:
Object
  • Object
show all
Defined in:
lib/mdt/helpers/command.rb

Overview

A helper class to be used when implementing commands

Class Method Summary collapse

Class Method Details

.apply_command_modifiers(command, modifiers) ⇒ Object

Finds and applies command modifiers to a command using passed modifiers configuration. Arguments:

  • command - a command or expression to prepend command modifiers to

  • modifiers - an array of modifier configurations - each configuration is a Hash that includes the modifier type and modifier options

Returns:

  • Modified command



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# File 'lib/mdt/helpers/command.rb', line 13

def self.apply_command_modifiers(command, modifiers)
  modifiers.each do |modifier_config|
    unless modifier_config.has_key?('type')
      puts 'WARNING: Skipping command modifier because of missing type...'
      next
    end
    modifier_key = modifier_config['type'].split('.').first
    modifier_value = modifier_config['type'].split('.').last
    modifier_options = modifier_config['options']
    modifier = MDT::CommandModifiers::Base.descendants.select { |cm| cm.key == modifier_key }.first
    if modifier == nil
      puts "WARNING: Could not find a command modifier set with key #{modifier_key}. Check its correctness or install needed MDT modules."
      next
    end
    unless modifier.subkeys.include?(modifier_value)
      puts "WARNING: Command modifier set with key #{modifier_key} does not have a command modifier with key #{modifier_value}."
      next
    end
    modifier = modifier.new
    command = modifier.prepend(modifier_value, command, modifier_options)
  end
  command
end