#! /bin/sh -e
#  /usr/lib/emacsen-common/packages/install/foo
# [ This particular script hasn't been tested, so be careful. ]

set -e

FLAVOR=$1
PACKAGE="chaos"

if [ "X${FLAVOR}" = "X" ]; then
    echo Need argument to determin FLAVOR of emacs;
    exit 1
fi

if [ "X${PACKAGE}" = "X" ]; then
    echo Internal error: need package name;
    exit 1;
fi

## Checking MULE supported XEmacs.
#if [ ${FLAVOR} = "xemacs20" -o ${FLAVOR} = "xemacs21" ]; then
#CHECKMULE=`${FLAVOR} -batch -vanilla -eval "(if (featurep 'mule)(message \"MULE\"))" 2>&1 `
#  if [ "${CHECKMULE}" != "MULE" ]; then
#	echo
#	echo "install/${PACKAGE}: Ignoring ${FLAVOR}."
#	echo "${PACKAGE} needs MULE supported XEmacs."
#	exit
#	fi
#fi

ELDIR=/usr/share/emacs/site-lisp/${PACKAGE}
ELCDIR=/usr/share/${FLAVOR}/site-lisp/${PACKAGE}

STARTDIR=/etc/${FLAVOR}/site-start.d
STARTFILE="${PACKAGE}-init.el";

SITELISP=/usr/share/${FLAVOR}/site-lisp

EFLAGS="-batch -q -l ./dgnushack.el -f dgnushack-compile"
COMPILE="-batch -q -f batch-byte-compile"

case "${FLAVOR}" in
	emacs)
	;;
	*)

	echo -n "install/${PACKAGE}: Byte-compiling for ${FLAVOR} ..."

	if [ "${FLAVOR}" = "emacs19" ]; then
		if [ ! -f /usr/share/emacs/site-lisp/custom-init.el ]; then
		echo " exited."
		echo "W: Please install custom package for emacs19." ;
		exit 0;
		fi
	fi
	if [ "${FLAVOR}" = "mule2" ]; then
		if [ ! -f /usr/share/emacs/site-lisp/custom-mule-init.el ]; then
		echo " exited."
		echo "W: Please install custom package for mule2." ;
		exit 0;
		fi
	fi

	if [ "${FLAVOR}" = "xemacs20" ]; then
		## Fix compile error with xemacs20 on unset LANG or LANG=C .
		export LANG=ja_JP
	fi
	rm -rf ${ELCDIR}
    install -m 755 -d ${ELCDIR}

    # Copy the temp .el files
    cp ${ELDIR}/* ${ELCDIR}/

    # Byte compile them
    (cd ${ELCDIR}
        ${FLAVOR} ${EFLAGS} > CompilationLog 2>&1
		${FLAVOR} ${COMPILE} ${STARTFILE} >> CompilationLog 2>&1
		rm -f *.el Makefile
	)

	gzip -9 ${ELCDIR}/CompilationLog

	if [ -e  ${ELCDIR}/${STARTFILE}c ]; then
		mv ${ELCDIR}/${STARTFILE}c ${STARTDIR}/50${STARTFILE}c;
	else
		ln -f -s ${ELDIR}/${STARTFILE} ${STARTDIR}/50${STARTFILE};
	fi
	echo " done."
	;;
esac

exit 0;
