class StringUtil
  def self.backward_truncate(str)
    return '...' << str[str.length - 50 + 3..str.length] if str.length > 50

    spaces = ''
    (50 - str.length).times { spaces << ' ' }
    str.dup << spaces
  end

  def self.success(str)
    WebTranslateIt::Util.can_display_colors? ? "\e[32m#{str}\e[0m" : str
  end

  def self.failure(str)
    WebTranslateIt::Util.can_display_colors? ? "\e[31m#{str}\e[0m" : str
  end

  def self.checksumify(str)
    WebTranslateIt::Util.can_display_colors? ? "\e[33m#{str[0..6]}\e[0m" : str[0..6]
  end

  def self.titleize(str)
    WebTranslateIt::Util.can_display_colors? ? "\e[1m#{str}\e[0m\n\n" : str
  end

  def self.important(str)
    WebTranslateIt::Util.can_display_colors? ? "\e[1m#{str}\e[0m" : str
  end
end