# $Id: ghc-pkg-register.sh 273 2009-12-14 20:34:36Z elkner $

#i postinstall=${SCRIPTDIR}/ghc-pkg-register.sh
#i postremove=${SCRIPTDIR}/ghc-pkg-register.sh
#i package.conf=${TMPBUILD}/package.conf

FGREP=/usr/bin/fgrep
GREP=/usr/bin/grep
SED=/usr/bin/sed

# ghc installed ?

if [ -z "$PKG_INSTALL_ROOT" -o "$PKG_INSTALL_ROOT" = "/" ]; then
	PARAM=""
else
	PARAM="-R $PKG_INSTALL_ROOT"
fi

pkginfo -q $PARAM LNFghc
if [ $? -ne 0 ]; then
	echo "Unable to locate the GHC package.conf file"
	echo "Unable to register ${PKGINST}."
	exit 1
fi
DIR=`pkgparam $PARAM LNFghc BASEDIR`
VER=`pkgparam $PARAM LNFghc VERSION`
PKGCONF="${PKG_INSTALL_ROOT}/${DIR}/lib/ghc-${VER}/package.conf"
if [ ! -f "$PKGCONF" ]; then
	echo "${PKG_INSTALL_ROOT}/${DIR}/lib/ghc-${VER}/package.conf seems not to be file - exiting."
	exit 2
fi

FNAME=`basename $0`
IDIR=`dirname $0`
if [ ! -f "${IDIR}/package.conf" ]; then
	echo "Missing ${IDIR}/package.conf - exiting"
	exit 2
fi
T_PKGCONF=`mktemp -t XXXX`
if [ "$FNAME" = "postremove" ]; then
	echo "Trying to unregister modules ..."
	UNREGISTER="true"
else
	echo "Trying to register modules ..."
fi
$SED -e "s,@CLIENT_BASEDIR@,${CLIENT_BASEDIR},g" \
	"${IDIR}/package.conf" >$T_PKGCONF

if [ $? -ne 0 ]; then
	echo "Unable to prepare package.conf - exiting."
	rm -f $T_PKGCONF
	exit 2
fi

# Now we have all we need and may proceed as in ghc-pkg-register.sh

TMP=`mktemp -t XXXXX`
TMP2=`mktemp -t XXXX`
if [ "$UNREGISTER" = "true" ]; then
	cp "$PKGCONF" $TMP
fi
$FGREP -s InstalledPackageInfo "$T_PKGCONF"
if [ $? -ne 0 ]; then
	echo "\"${IDIR}/package.conf\" seems not to be a ghc package.conf snippet - exiting"
	rm -f $T_PKGCONF $TMP $TMP2
	exit 2
fi
$FGREP InstalledPackageInfo ${T_PKGCONF} | while read LINE ; do
	LOOKUP=`echo $LINE | $SED -e 's,^\[, ,' -e 's/, versionTags.*//'`
	NAME=`echo $LOOKUP | $SED -e 's,.*PackageName ",,' -e 's,".*= ,,'`
	if [ "$UNREGISTER" = "true" ]; then
		$FGREP -v "$LOOKUP" $TMP >$TMP2
		cmp -s $TMP $TMP2
		if [ $? -eq 0 ]; then
			echo "\"$NAME\" is not registered - skipped"
		else
			echo "\"$NAME\" unregistered"
			cp $TMP2 $TMP
		fi
	else
		$FGREP -s "$LOOKUP" "$PKGCONF"
		if [ $? -ne 0 ]; then
			echo "Registering \"$NAME\" in package.conf"
			echo " ${LINE}," >>$TMP
		else
			echo "\"$NAME\" is already registered - skipped"
		fi
	fi
done
if [ "$UNREGISTER" = "true" ]; then
	cmp -s $TMP "$PKGCONF"
	if [ $? -ne 0 ]; then
		# file has been changed
		# remove trailing , in the last line and append to the original one
		$SED -e '$d' $TMP | $SED -e '$ s/,$//' >$TMP2
		echo ']' >>$TMP2
		cp $TMP2 "$PKGCONF"
	else
		echo "$PKGCONF unchanged"
	fi
elif [ -s "$TMP" ]; then
	# remove last line with a ] and add a trailing , to the new last line
	$SED -e '$d' "$PKGCONF" | $SED -e '$ s/$/,/' >$TMP2
	# remove trailing , in the last line and append to the original one
	$SED -e '$ s/,$//' $TMP >>$TMP2
	echo ']' >>$TMP2
	cp $TMP2 "$PKGCONF"
else
	echo "$PKGCONF unchanged"
fi
rm -f $TMP $TMP2 $T_PKGCONF