#! /bin/bash

# XCDS: script provides possibility to create diff which satisfies our format
#       result: diff between current master HEAD and commit, corresponding to original Apple version
# NOTE: should be placed at the same level as cloned mDNSResponder-xcds repo

PatchName=`pwd`/diff.diff

# DO NOT MODIFY: ID of commit, which contains original version
OLDC=5a6b12c7fbb03d483cf12f61fa25393b7fb81cf8

cd mDNSResponder-xcds
NEWC=`git rev-parse HEAD`
git diff -z --minimal -U3 --no-prefix ${OLDC}..${NEWC} > ${PatchName}

echo "*** Cleanup patch..."
sed -i -e '/^diff */d' ${PatchName}
sed -i -e '/^index */d' ${PatchName}
sed -i -e '/^new file */d' ${PatchName}