Assign input method to a keyboard shortcut in Mac

changeInput.sh

#!/bin/sh
# Run with
# curl -L https://raw.github.com/gist/3275691/changeInput.sh | sh
git clone git://gist.github.com/2146751.git changeInput
cd changeInput
gcc t.m -o changeInput -lobjc -framework foundation -framework carbon
cp changeInput ~/bin

# Then open Automator and create something like:
# Service
# Service receives no input in any application
# Add Run Shell Script and set its contents to:
# ~/bin/changeInput "U.S. Extended"
# Save as "Use Extended"
# 
# Open System Preferences
# Keyboard > Services > General
# Click "Use Extended" and assign a keyboard shortcut