#!/usr/bin/env ruby
# -*- ruby -*-
#
# Converts the input strings to regular expressions.
#

def convert_to_regex(s)
  res = s
  res = res.gsub /\+/, '\\+'
  res = res.gsub /\?/, '\\?'
  res = res.gsub /\*/, '\\*'
  res = res.gsub /\//, '\\/'
  res = res.gsub /(\b)[a-zA-Z]+(\b)/,  '\\1(\\w+)\\2'
  res = res.gsub /(\b)\d+(\b)/,        '\\1(\\d+)\\2'
  res = res.gsub /\s+/,                '\\s+'
  return res
end

def main(argv)
  argv.each do |arg|
    puts convert_to_regex(arg)
  end
end

main ARGV