Quick and dirty way to convert Ruby/Chef template variables to YAML/Ansible.

template_switch.sh

# <%= @app['config']['foo'] %>
# to
# {{ app.config.foo }}

for file in $(ls -1 templates/); do
  sed -i -e "s/<%= @/{{ /" $file			# Replace <%= @ with {{
  sed -i -e "s/%>/}}/" $file				  # Replace %> with }}
  sed -i -e "s/\['/./" $file				  # Replace first occurence of [' with .
  sed -i -e "s/'\]\['/./g" $file			# Replace all middle '][' with .
  sed -i -e "s/'\] / /" $file				  # Remove closing ']
done