rename-vmod-script

#!/bin/bash
#
# Script to rename libvmod-example into libvmod-foo.
# (where "foo" is your new vmod name, of course.)
#
# Leaves the changes uncommitted in the working tree, so you get to fix any
# unintended changes.
#
# Author: Lasse Karstensen <lkarsten@varnish-software.com>, September 2014.
#
set -o errexit

NAME=$1
if [ -z "$NAME" ]; then
	echo "Usage: $0 <new-vmod-name-without-libvmod-prefix>"
	echo "Rename libvmod-example source tree."
	echo "If the name is an acronym, you can use capital letters."
	echo
	exit -1
fi

SYM_NAME=${NAME,,*}
CAP_NAME=${NAME^?}
UPP_NAME=${NAME^^?}

if ! git diff-index --quiet HEAD --; then
	echo "ERROR: Need a clean working tree. Run \"git stash\" first."
	exit -2
fi

git mv src/vmod_example.c src/vmod_${SYM_NAME}.c
git mv src/vmod_example.vcc src/vmod_${SYM_NAME}.vcc

git grep -z -l example | xargs -0 sed -i -s -e "s/example/${SYM_NAME}/g"
git grep -z -l Example | xargs -0 sed -i -s -e "s/Example/${CAP_NAME}/g"
git grep -z -l EXAMPLE | xargs -0 sed -i -s -e "s/EXAMPLE/${UPP_NAME}/g"
sed -i '/circleci.com\/gh\/varnishcache\/libvmod-example/d' README.rst

git rm -f rename-vmod-script

# restore foreign files
git checkout -- m4/

cat <<EOF
All done.

For your cut&paste needs:
git commit -a -m "Automatic rename of libvmod-example to libvmod-${SYM_NAME}."
EOF