Class: Opts::CommandParser

Inherits:
Object
  • Object
show all
Defined in:
lib/opts/command_parser.rb

Instance Method Summary collapse

Constructor Details

#initialize(default_app = nil, &block) ⇒ CommandParser

Returns a new instance of CommandParser.



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# File 'lib/opts/command_parser.rb', line 3

def initialize(default_app=nil, &block)
  @default_app = default_app
  @commands = {}
  
  if block and block.arity == -1
    instance_eval(&block)
  elsif block_given?
    yield(self)
  end
end

Instance Method Details

#call(env, args) ⇒ Object

Raises:



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# File 'lib/opts/command_parser.rb', line 23

def call(env, args)
  cmd_name = args.first.to_s
  cmd = @commands[cmd_name]
  
  raise Opts::UnknownCommandError, "Unknown command #{cmd_name}" unless cmd
  
  (env[:commands] ||= []) << cmd_name
  cmd[:app].call(env, args[1..-1])
end

#cmd(name, app = nil, *args, &block) ⇒ Object 



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# File 'lib/opts/command_parser.rb', line 14

def cmd(name, app=nil, *args, &block)
  if Class === app
    app = app.new(*args, &block)
  end
  @commands[name.to_s] = {
    :app  => app || block
  }
end