#!/bin/bash
# Copyright 2006,2007 (C) Kees Cook <kees@ubuntu.com>
# License: GPLv2
for filename in $(echo "debian/rules"; grep ^include debian/rules | fgrep -v '$(' | awk '{print $2}')
do
    fgrep -q patchsys.mk "$filename" && { echo "cdbs"; exit; }
    fgrep -q quilt "$filename" && { echo "quilt"; exit; }
    fgrep -q dbs-build.mk "$filename" && { echo "dbs"; exit; }
    fgrep -q dpatch "$filename" && { echo "dpatch"; exit; }
    fgrep -q '*.diff' "$filename" && { echo "diff splash"; exit; }
done
[ -d debian/patches ] || { echo "patchless?"; exit; }
echo "unknown patch system"