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#!/bin/bash
if [ $# -ne 2 ]; then
printf "usage: %s [ORIG-DIR] [MODF-DIR]\n" "$0"
exit 1
fi
set -e
NAME="$(basename $0)"
ORIG="$(basename $1)"
MODF="$(basename $2)"
CHDIR="$(dirname $1)"
TMPFILE="$(mktemp)"
cd ${CHDIR}
ret=0
diff -Naur ${ORIG} ${MODF} >${TMPFILE} || ret=$?
if [ $ret -ne 1 ]; then
printf "%s: %s\n" "${NAME}" "No diffs found."
exit 1
fi
ret=0
command -v filterdiff >/dev/null 2>/dev/null || ret=$?
if [ $ret -eq 0 ]; then
filterdiff --remove-timestamps ${TMPFILE} >${MODF}.patch
else
printf "%s: %s\n" "${NAME}" "Command \`filterdiff\` not found. Can not remove timestamps from patch"
mv ${TMPFILE} ${MODF}.patch
fi
printf "%s: %s\n" "${NAME}" "Generated ${CHDIR}/${MODF}.patch"
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