Class: Dracula::Command

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

Defined Under Namespace

Classes: Desc

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(klass, method_name, desc, long_desc, options) ⇒ Command

Returns a new instance of Command.



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# File 'lib/dracula/command.rb', line 13

def initialize(klass, method_name, desc, long_desc, options)
  @klass = klass
  @method_name = method_name
  @desc = desc
  @long_desc = long_desc
  @options = options || []
end

Instance Attribute Details

#desc ⇒ Object (readonly)

Returns the value of attribute desc.



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# File 'lib/dracula/command.rb', line 7

def desc
  @desc
end

#long_desc ⇒ Object (readonly)

Returns the value of attribute long_desc.



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# File 'lib/dracula/command.rb', line 9

def long_desc
  @long_desc
end

#method_name ⇒ Object (readonly)

Returns the value of attribute method_name.



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# File 'lib/dracula/command.rb', line 6

def method_name
  @method_name
end

#options ⇒ Object (readonly) Also known as: flags

Returns the value of attribute options.



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# File 'lib/dracula/command.rb', line 8

def options
  @options
end

Instance Method Details

#arguments ⇒ Object 



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# File 'lib/dracula/command.rb', line 37

def arguments
  @klass.instance_method(@method_name).parameters.select { |p| p[0] == :req }.map { |p| p[1].to_s.upcase }
end

#description ⇒ Object 



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# File 'lib/dracula/command.rb', line 33

def description
  desc.description
end

#full_name ⇒ Object 



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# File 'lib/dracula/command.rb', line 25

def full_name
  "#{prefix}#{name}"
end

#help ⇒ Object 



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# File 'lib/dracula/command.rb', line 41

def help
  CommandHelp.new(self).show
end

#name ⇒ Object 



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# File 'lib/dracula/command.rb', line 29

def name
  desc.name
end

#prefix ⇒ Object 



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# File 'lib/dracula/command.rb', line 21

def prefix
  @klass.namespace.prefix
end

#run(params) ⇒ Object 



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# File 'lib/dracula/command.rb', line 45

def run(params)
  args = params.take_while { |p| p[0] != "-" }

  if args.count < arguments.count
    puts Dracula::UI.error("Missing arguments")
    puts ""
    help
    exit(1)
  end

  if args.count > arguments.count
    puts Dracula::UI.error("Too many arguments")
    puts ""
    help
    exit(1)
  end

  parsed_flags = parse_flags(params.drop_while { |p| p[0] != "-" })

  missing_flags = missing_required_flags(parsed_flags)

  unless missing_flags.empty?
    puts Dracula::UI.error("Missing required Parameter: #{missing_flags.first.banner}")
    puts ""
    help
    exit(1)
  end

  @klass.new(parsed_flags).public_send(method_name, *args)
rescue OptionParser::MissingArgument => ex
  flag = flags.find { |f| "--#{f.name}" == ex.args.first }

  puts Dracula::UI.error("Missing flag parameter: #{flag.banner}")
  puts ""
  help
  exit(1)
rescue OptionParser::InvalidOption => ex
  puts Dracula::UI.error("Unrecognized Parameter: #{ex.args.first}")
  puts ""
  help
  exit(1)
end