BBEdit: Toggle Parentheses

Toggle Parentheses.rb

#!/usr/bin/env ruby

#-------------------------------------------------------------------------------
# Toggle Parentheses
#-------------------------------------------------------------------------------
# Jason Sims <jason@symmetriq.com>
#-------------------------------------------------------------------------------
#
# For languages with optional parentheses, such as Ruby and CoffeeScript.
#
# Wraps a selection with parentheses if they're not already present.
# Removes parentheses and adds leading space if the selection starts and ends
# with parentheses.
#
#-------------------------------------------------------------------------------
#
# Installation in BBEdit:
#
# 1. Place this file in your "Text Filters" directory:
#    ~/Library/Application Support/BBEdit/Text Filters/
#        or
#    ~/Dropbox/Application Support/BBEdit/Text Filters/
#
# 2. Assign a keyboard shortcut to "Toggle Parentheses" in:
#    BBEdit → Preferences → Menus & Shortcuts → Text → Apply Text Filter
#
#-------------------------------------------------------------------------------
# More scripts & snippets here:
# https://gist.github.com/symmetriq
#-------------------------------------------------------------------------------

input = ARGF.set_encoding('UTF-8').read
if input[0] == '(' and input[-1] == ')'
  # has parentheses; remove them (and add leading space)
  print " #{input[1..-2]}"
else
  # no parentheses; add them (and strip whitespace)
  print "(#{input.strip})"
end