Text to Pig Latin

igpay.sh

#!/bin/bash -
#
# SCRIPT: igpay
# AUTHOR: Luciano D. Cecere
# DATE: 10/18/2014-04:29:05 PM
#
########################################################################
#
# igpay - convert standard input to standard pig latin :@)
# Copyright (C) 2014 Luciano D. Cecere <ldante86@aol.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
########################################################################

export PATH=/bin:/usr/bin
unalias -a

declare -l words

_pigout()
{
    local prefix=${1%%[aeiouy]*}
    local suffix=$(sed 's/^[bcdfghjklmnpqrstvxwz]*//' <<< $1)

    case ${1:0:2} in
      qu)  printf "${1:2}${1:0:2}ay "
           return ;;
    esac
    case ${1:0:1} in
      [aeiou])  printf "${suffix}${prefix}way " ;;
      [0-9]  )  printf "$1 " ;;
      *      )  printf "${suffix}${prefix}ay " ;;
    esac
}

while read words
do
  for i in $words
  do
    _pigout $i
  done
  printf "\n\n"
done