Method: IRB.parse_opts

Defined in:
lib/irb/init.rb

.parse_opts(argv: ::ARGV) ⇒ Object

option analyzing



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# File 'lib/irb/init.rb', line 251

def IRB.parse_opts(argv: ::ARGV)
  load_path = []
  while opt = argv.shift
    case opt
    when "-f"
      @CONF[:RC] = false
    when "-d"
      $DEBUG = true
      $VERBOSE = true
    when "-w"
      Warning[:deprecated] = $VERBOSE = true
    when /^-W(.+)?/
      opt = $1 || argv.shift
      case opt
      when "0"
        $VERBOSE = nil
      when "1"
        $VERBOSE = false
      else
        Warning[:deprecated] = $VERBOSE = true
      end
    when /^-r(.+)?/
      opt = $1 || argv.shift
      @CONF[:LOAD_MODULES].push opt if opt
    when /^-I(.+)?/
      opt = $1 || argv.shift
      load_path.concat(opt.split(File::PATH_SEPARATOR)) if opt
    when '-U'
      set_encoding("UTF-8", "UTF-8")
    when /^-E(.+)?/, /^--encoding(?:=(.+))?/
      opt = $1 || argv.shift
      set_encoding(*opt.split(':', 2))
    when "--inspect"
      if /^-/ !~ argv.first
        @CONF[:INSPECT_MODE] = argv.shift
      else
        @CONF[:INSPECT_MODE] = true
      end
    when "--noinspect"
      @CONF[:INSPECT_MODE] = false
    when "--no-pager"
      @CONF[:USE_PAGER] = false
    when "--singleline", "--readline", "--legacy"
      @CONF[:USE_SINGLELINE] = true
    when "--nosingleline", "--noreadline"
      @CONF[:USE_SINGLELINE] = false
    when "--multiline", "--reidline"
      if opt == "--reidline"
        warn <<~MSG.strip
          --reidline is deprecated, please use --multiline instead.
        MSG
      end

      @CONF[:USE_MULTILINE] = true
    when "--nomultiline", "--noreidline"
      if opt == "--noreidline"
        warn <<~MSG.strip
          --noreidline is deprecated, please use --nomultiline instead.
        MSG
      end

      @CONF[:USE_MULTILINE] = false
    when /^--extra-doc-dir(?:=(.+))?/
      opt = $1 || argv.shift
      @CONF[:EXTRA_DOC_DIRS] << opt
    when "--echo"
      @CONF[:ECHO] = true
    when "--noecho"
      @CONF[:ECHO] = false
    when "--echo-on-assignment"
      @CONF[:ECHO_ON_ASSIGNMENT] = true
    when "--noecho-on-assignment"
      @CONF[:ECHO_ON_ASSIGNMENT] = false
    when "--truncate-echo-on-assignment"
      @CONF[:ECHO_ON_ASSIGNMENT] = :truncate
    when "--verbose"
      @CONF[:VERBOSE] = true
    when "--noverbose"
      @CONF[:VERBOSE] = false
    when "--colorize"
      @CONF[:USE_COLORIZE] = true
    when "--nocolorize"
      @CONF[:USE_COLORIZE] = false
    when "--autocomplete"
      @CONF[:USE_AUTOCOMPLETE] = true
    when "--noautocomplete"
      @CONF[:USE_AUTOCOMPLETE] = false
    when "--regexp-completor"
      @CONF[:COMPLETOR] = :regexp
    when "--type-completor"
      @CONF[:COMPLETOR] = :type
    when /^--prompt-mode(?:=(.+))?/, /^--prompt(?:=(.+))?/
      opt = $1 || argv.shift
      prompt_mode = opt.upcase.tr("-", "_").intern
      @CONF[:PROMPT_MODE] = prompt_mode
    when "--noprompt"
      @CONF[:PROMPT_MODE] = :NULL
    when "--script"
      noscript = false
    when "--noscript"
      noscript = true
    when "--inf-ruby-mode"
      @CONF[:PROMPT_MODE] = :INF_RUBY
    when "--sample-book-mode", "--simple-prompt"
      @CONF[:PROMPT_MODE] = :SIMPLE
    when "--tracer"
      @CONF[:USE_TRACER] = true
    when /^--back-trace-limit(?:=(.+))?/
      @CONF[:BACK_TRACE_LIMIT] = ($1 || argv.shift).to_i
    when /^--context-mode(?:=(.+))?/
      @CONF[:CONTEXT_MODE] = ($1 || argv.shift).to_i
    when "--single-irb"
      @CONF[:SINGLE_IRB] = true
    when "-v", "--version"
      print IRB.version, "\n"
      exit 0
    when "-h", "--help"
      require_relative "help"
      IRB.print_usage
      exit 0
    when "--"
      if !noscript && (opt = argv.shift)
        @CONF[:SCRIPT] = opt
        $0 = opt
      end
      break
    when /^-./
      fail UnrecognizedSwitch, opt
    else
      if noscript
        argv.unshift(opt)
      else
        @CONF[:SCRIPT] = opt
        $0 = opt
      end
      break
    end
  end

  load_path.collect! do |path|
    /\A\.\// =~ path ? path : File.expand_path(path)
  end
  $LOAD_PATH.unshift(*load_path)
end