Class: Ru::Process

Inherits:
Object
  • Object
show all
Defined in:
lib/ru/process.rb

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Process

Returns a new instance of Process.



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# File 'lib/ru/process.rb', line 6

def initialize
  @option_printer = OptionPrinter.new
end

Instance Method Details

#run ⇒ Object 



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# File 'lib/ru/process.rb', line 10

def run
  output = process_options
  return output if output

  args  = ARGV.dup
  @code = args.shift

  if @code.blank?
    $stderr.puts @option_printer.run(:help)
    return
  end

  @parsed = prepare_code(@code)
  @stdin  = get_stdin(args, @options[:stream]) if @parsed[:get_stdin]

  context =
    if @stdin.nil?
      Ru::Array.new([])
    else
      if @options[:stream]
        if @options[:binary]
          Ru::Stream.new(@stdin.each_byte.lazy)
        else
          Ru::Stream.new(@stdin.each_line.lazy.map { |line| line.chomp("\n".freeze) })
        end
      else
        if @options[:binary]
          Ru::Array.new(@stdin.bytes)
        else
          # Prevent 'invalid byte sequence in UTF-8'
          @stdin.encode!('UTF-8', 'UTF-8', invalid: :replace)
          Ru::Array.new(@stdin.split("\n"))
        end
      end
    end

  output = context.instance_eval(@parsed[:code])
  output = @stdin if output == nil

  prepare_output(output)
end