Class: Nagi::OptionParser

Inherits:
OptionParser
  • Object
show all
Defined in:
lib/nagi/optionparser.rb

Instance Method Summary collapse

Constructor Details

#initialize(*args, &block) ⇒ OptionParser

Returns a new instance of OptionParser.



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# File 'lib/nagi/optionparser.rb', line 4

def initialize(*args, &block)
  @arguments = []
  @options = {}

  super(*args, &block)

  self.banner = "Usage: #{$0} [options]"

  self.on_tail('-h', '--help', 'Display this help message') do
    puts help
    exit 0
  end

  self.on_tail('-V', '--version', 'Display version information') do
    puts "#{program_name} #{version or "(unknown version)"}".strip
    exit 0
  end
end

Instance Method Details

#argument(name) ⇒ Object 



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# File 'lib/nagi/optionparser.rb', line 23

def argument(name)
  @arguments.push(name)
  self.banner += " <#{name}>"
end

#parse!(args) ⇒ Object 



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# File 'lib/nagi/optionparser.rb', line 28

def parse!(args)
  begin
    @options.clear
    super(args)
    @arguments.each do |a|
      @options[a] = args.shift or raise ArgumentError.new("Argument '#{a}' not given")
    end
    raise ArgumentError.new("Too many arguments") if args.length > 0
  rescue ::OptionParser::ParseError => e
    raise ArgumentError.new(e.message)
  end
  return @options
end

#switch(name, *args) ⇒ Object 



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# File 'lib/nagi/optionparser.rb', line 42

def switch(name, *args)
  on(*args) do |value|
    @options[name] = value
  end
end