Find Patchset Base

find_patchset_base.sh

#!/bin/bash

#
# This script will try to apply a patch set to a range of commits and stop
# once one is successfully identified. Useful for identifying the applicable
# patch base for an old patch set in a rapidly changing repository.
#

TAG_FROM='v2.8.1.1'
TAG_TO='v2.9.0'
PATCHDIR="$PWD/../patches"

for changeset in `git log --pretty=oneline $TAG_FROM..$TAG_TO | cut -f1 -d' '`; do
	echo "Testing Changeset: $changeset"
	git checkout $changeset
	git am $PATCHDIR/*
	if [[ $? -eq 0 ]]; then
		echo "Found! Rev: $changeset"
		break
	else
		echo "Patch unsuccessful..."
		git am --abort
		git reset --hard $changeset
		git clean -fdxx
	fi
	echo -e "\n--\n"
done