Class: StarterGem::Shell

Inherits:
Object
  • Object
show all
Defined in:
lib/starter_gem/shell.rb

Constant Summary collapse 

<<~"MSG".freeze
  usage: #{$PROGRAM_NAME} color

  Simple demo that prints color in the color if it knows about the color
MSG

Class Method Summary collapse

Class Method Details

.gather_options(argv) ⇒ Object

rubocop:disable Metrics/MethodLength



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# File 'lib/starter_gem/shell.rb', line 28

def self.gather_options(argv) # rubocop:disable Metrics/MethodLength
  options = {
    show_version: false
  }

  OptionParser.new { |parser|
    parser.banner = BANNER

    parser.on("-v", "--version", "Show version") do |version|
      options[:show_version] = version
    end

    parser.on("-h", "--help", "Prints this help") do
      puts parser
      exit
    end
  }.parse! argv

  options
end

.run(argv, out: $stdout, err: $stderr) {|options| ... } ⇒ Object

Yields:

  • (options) 


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# File 'lib/starter_gem/shell.rb', line 16

def self.run(argv, out: $stdout, err: $stderr)
  options = gather_options(argv)

  out.puts "version: #{StarterGem::VERSION}" if options.delete(:show_version)

  usage(err: err) unless argv.size == 1

  options[:color] = argv[0]

  yield(options)
end

.usage(err: $stderr) ⇒ Object 



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# File 'lib/starter_gem/shell.rb', line 11

def self.usage(err: $stderr)
  err.puts BANNER
  exit 1
end