#! /bin/sh
set -e

code=0

newline='
'
IFS_SAVE="$IFS"
IFS="$newline"
for line in $(cat manifest); do
	IFS="$IFS_SAVE"
	src="${line%% *}"
	ver="${line#* }"
	if [ ! -e "source/$src/debian/changelog" ]; then
		cat >&2 <<EOF
Source package $src missing!
EOF
		code=1
		continue
	fi
	tree_ver="$(dpkg-parsechangelog -l"source/$src/debian/changelog" | \
		sed -n -e '/^Version:/s/Version: //p')"
	if [ "$ver" != "$tree_ver" ]; then
		cat >&2 <<EOF
Local copy of source package $src has version $tree_ver,
but manifest has $ver!
EOF
		code=1
		continue
	fi
	IFS="$newline"
done
IFS="$IFS_SAVE"

if [ $code -ne 0 ]; then
	cat >&2 <<EOF

Run debian/rules update to refresh local copies of source packages.
EOF
fi

exit $code