Class: UnitSplit::CLI

Inherits:
Object
  • Object
show all
Defined in:
lib/unit_split/cli.rb

Class Method Summary collapse

Class Method Details

.bootstrap(argv) ⇒ Object 



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# File 'lib/unit_split/cli.rb', line 9

def bootstrap(argv)
  unit_type = nil
  parser = OptionParser.new
  parser.on('-s', 'seconds') { unit_type = :second }
  parser.on('-b', 'bytes')   { unit_type = :byte  }
  parser.on('-j', 'japanese number') { unit_type = :japanese }

  target = nil
  begin
    target = parser.parse!(argv)
    if target.kind_of? Array
      target = target.first
    end
  rescue OptionParser::MissingArgument => e
    abort(e.to_s)
  end
  
  if target.nil? || target.empty?
    if $stdin.ready?
      target = $stdin.readline.strip
    else
      abort "specify target number"
    end
  end

  unless unit_type
    abort "unit not specified"
  end

  unit = dispatch_unit(unit_type)
  unless unit
    abort "unknown unit type"
  end

  result = UnitSplit.split(target, unit)
  format_print result
end

.dispatch_unit(unit_type) ⇒ Object 



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# File 'lib/unit_split/cli.rb', line 47

def dispatch_unit(unit_type)
  case unit_type
  when :second
    return UnitSplit::Unit::Second
  when :byte
    return UnitSplit::Unit::Byte
  when :japanese
    return UnitSplit::Unit::JapaneseNumber
  else
    return nil
  end
end

.format_print(result) ⇒ Object 



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# File 'lib/unit_split/cli.rb', line 60

def format_print(result)
  max_value_length = 1
  max_label_length = 1

  # check label/value length
  result.each do |entry|
    label = entry[0]
    value = entry[1]
    if label && label.length > max_label_length
      max_label_length = label.length
    end
    if value && value.to_s.length > max_value_length
      max_value_length = value.to_s.length
    end
  end

  result.reverse.each do |entry|
    puts "%#{max_value_length}d %-#{max_label_length}s" %
      [entry[1], entry[0]]
  end
end