post-receive

#!/bin/sh

diebconf()
{
	echo "" >&2
	echo " One or more files ConfSync needs to run are not present" >&2
	echo " This must be fixed before ConfSync can continue" >&2
	echo "" >&2
	exit 1
}

diewmsg()
{
	echo "" >&2
	echo " ConfSync did not exit correctly" >&2
	echo " Files changed will be included in the next sync" >&2
	echo "" >&2
	exit 1
}

HASH_DIGITS="12"

GIT_WORK_TREE="confsync/checkout/"
LASTHASH_FILE="confsync/lasthash.txt"
CONFSYNC_FILE="confsync/confsync.pl"

[ -d "${GIT_WORK_TREE}" ] || diebconf
[ -f "${CONFSYNC_FILE}" ] || diebconf

export GIT_WORK_TREE

read OLDHASH NEWHASH REF

if [ -r "${LASTHASH_FILE}" ] ; then
	OLDHASH="$(cat ${LASTHASH_FILE})"
fi

OLDHASH="$(expr substr ${OLDHASH} 1 ${HASH_DIGITS})"
NEWHASH="$(expr substr ${NEWHASH} 1 ${HASH_DIGITS})"

echo ""
echo " Launching ConfSync for ${OLDHASH}..${NEWHASH}"
echo ""
git log -n1 --abbrev="${HASH_DIGITS}" --pretty="format: [%h] * %s {%an}" \
  "${OLDHASH}" | cat
echo ""
git log --reverse --abbrev="${HASH_DIGITS}" \
  --pretty="format: [%h] + %s {%an}" "${OLDHASH}..${NEWHASH}" | cat
echo ""
echo ""
git diff --stat "${OLDHASH}..${NEWHASH}" </dev/null | cat
echo ""

echo " ---"
echo ""

git checkout -f "${NEWHASH}" </dev/null >/dev/null 2>&1
if [ "x$?" != "x0" ] ; then
	echo "" >&2
	echo " Git checkout failed - is the repository broken?" >&2
	echo " This must be fixed before ConfSync can continue" >&2
	diewmsg
fi

chmod -R og-rwx "${GIT_WORK_TREE}" </dev/null >/dev/null 2>&1
git diff --stat --name-only "${OLDHASH}..${NEWHASH}" \
  </dev/null 2>/dev/null | perl "${CONFSYNC_FILE}"
if [ "x$?" != "x0" ] ; then
	diewmsg
fi

echo "${NEWHASH}" >"${LASTHASH_FILE}"