Method: Launchr::Mixlib::CLI#parse_options

Defined in:
lib/launchr/mixin/mixlib_cli.rb

#parse_options(argv = ARGV) ⇒ Object

Parses an array, by default ARGV, for command line options (as configured at the class level).

Parameters

argv<Array>

The array of arguments to parse; defaults to ARGV

Returns

argv<Array>

Returns any un-parsed elements.



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# File 'lib/launchr/mixin/mixlib_cli.rb', line 450

def parse_options(argv=ARGV)
  argv = argv.dup
  argv = guess_and_switchify_arguments(argv)
  @opt_parser = OptionParser.new do |opts|  
    # Set the banner
    opts.banner = banner        
  
    # Create new options
    options_arguments.each do |opt_key, opt_val|          
      opt_args = build_option_arguments(opt_val)
    
      opt_method = case opt_val[:on]
        when :on
          :on
        when :tail
          :on_tail
        when :head
          :on_head
        else
          raise ArgumentError, "You must pass :on, :tail, or :head to :on"
        end

      parse_block = \
        Proc.new() do |*c|
          if c.empty? || c == [nil]
            c = true
            config[opt_key] = (opt_val[:proc] && opt_val[:proc].call(c)) || c
          else
            c = c.first
            config[opt_key] = (opt_val[:proc] && opt_val[:proc].call(c)) || c
          end
          puts filter_options_summary(opts.to_s) if opt_val[:show_options]
          exit opt_val[:exit] if opt_val[:exit]
        end

      # opts.send(:on, *[opt_method,*opt_args, parse_block])
      opt_args.unshift opt_method
      opt_args << parse_block
      opts.send(*opt_args)
    end
  end

  @opt_parser.summary_indent = @summary_indent if @summary_indent
  @opt_parser.summary_width  = @summary_width  if @summary_width

  @opt_parser.parse!(argv)
  @filtered_argv = argv

  # Deal with any required values
  fail = nil
  options_arguments.each do |opt_key, opt_value|
    next unless config[opt_key]
    # next if config[opt_key] == opt_value[:default]

    reqargs = []
    case opt_value[:requires]
    when nil
    when Proc
      begin
        result = opt_value[:requires].call(config)
      rescue 
        reqargs << $!.message
      end
      reqargs << result if result.class == String
    when Array,Symbol
      required_opts = [opt_value[:requires]].flatten
      required_opts.each do |required_opt|
        reqargs << required_opt.to_sym unless config[required_opt.to_sym]
      end

      reqargs.map! do |opt|
        arg = (options_arguments[opt][:long_strip] || options_arguments[opt][:short_strip]).dup
        arg.gsub!(/^-+/,"") if arguments.keys.include?(opt)
        arg
      end
    end
    unless reqargs.empty?
      fail = true
      opt = (opt_value[:long_strip] || opt_value[:short_strip]).dup
      opt.gsub!(/^-+/,"") if arguments.keys.include?(opt_key)
      puts "You must supply #{reqargs.join(", ")} with #{opt}!"
    end

  end
  if fail
    puts filter_options_summary(@opt_parser.to_s)
    exit 2
  end

  argv
end