Chinos

chinos.rb

# encoding: utf-8
#
# Smarter than SmartyPants? For plain text.
module Chinos
  extend self

  def educate(text)
    educate_quotes educate_ellipses(educate_dashes(text))
  end

  def stupefy(text)
    stupefy_quotes stupefy_ellipses(stupefy_dashes(text))
  end

  private

  def educate_dashes(text)
    text.gsub(/(\d)-(\d)/, '\1–\2').gsub(/ - /, ' – ').
         gsub(/(\b| |^)---(\b| |$)|-{2}/, '\1—\2')
  end

  def stupefy_dashes(text)
    text.gsub('–', '-').gsub('—', '--')
  end

  def educate_ellipses(text)
    text.gsub(/\. ?\. ?\. ?/, "…")
  end

  def stupefy_ellipses(text)
    text.gsub('…', '...')
  end

  def educate_quotes(text)
    text.gsub(/"([^"]*)"?/, '“\1”').
         gsub(/( |^)'(.+?)'( |$)/, '\1‘\2’\3').
         gsub(/([[:punct:]]| |^)'((?:[^']|[^' ]+'[^' ]+)+)'([[:punct:]]| |$)/,
           '\1‘\2’\3').
         gsub(/'/, '’')
  end

  def stupefy_quotes(text)
    text.gsub(/[“”]/, '"').gsub(/[‘’]/, "'")
  end
end