#!/bin/sh

pkgname=$1

BASENAME=${BASENAME:-%BASENAME%}
CP=${CP:-%CP%}
ECHO=${ECHO:-%ECHO%}
GREP=${GREP:-%GREP%}
SED=${SED:-%SED%}
TOUCH=${TOUCH:-%TOUCH%}
DO_NADA=${DO_NADA:-%DO_NADA%}

infodir=${INFODIR:-%INFODIR%}
infofiles=${INFOFILES:-%INFOFILES%}
infonodes=${INFONODES:-%INFONODES%}
infonodeexps=${INFONODEEXPS:-%INFONODEEXPS%}
elispdir=${ELISPDIR:-%ELISPDIR%}
sitestartdir=${SITESTARTDIR:-%SITESTARTDIR%}
dirsection=${DIRSECTION:-%DIRSECTION%}

OptionStart=";;; configuration options for ${pkgname}"
OptionEnd=";;; End of configuration options for ${pkgname}"

if [ "X$2" = X"POST-INSTALL" ]; then
	if [ ! -f ${sitestartdir}/site-start.el ]; then 
		 ${TOUCH} ${sitestartdir}/site-start.el
	fi
	count=1
	# For example, the result of `cut ttt -d : -f 2` is ttt. Why?
	infofiles=${infofiles}:
	while ${DO_NADA}; do
	    if [ X`${ECHO} ${infofiles} | cut -d : -f $count` = X ]; then
		break
	    fi
	    file=`${ECHO} ${infofiles} | cut -d : -f $count`
	    nodename=`${ECHO} ${infonodes} | cut -d : -f $count`
	    nodeexp=`${ECHO} ${infonodeexps} | cut -d : -f $count`
	    if [ ! "`${GREP} \"START-INFO-DIR-ENTRY\" ${infodir}/${file}`" ]; then
		${ECHO} "INFO-DIR-SECTION ${dirsection}" \
						>> ${infodir}/${file}
		${ECHO} "START-INFO-DIR-ENTRY"	>> ${infodir}/${file}
		${ECHO} "* ${nodename}: (`${BASENAME} ${file}`).		${nodeexp}" \
						>> ${infodir}/${file}
		${ECHO} "END-INFO-DIR-ENTRY"	>> ${infodir}/${file}
	    fi
	    count=`expr $count + 1`
	done
	${ECHO} "Adding entry for \"${pkgname}\" to ${infodir}/dir"
	for file in `${ECHO}  ${infofiles} | ${SED} "s,:, ,g"`; do
		install-info ${infodir}/${file} ${infodir}/dir
	done
	if [ X"${sitestartdir}" != X ] && \
	    [ "`${GREP} \"^${OptionStart}\"  ${sitestartdir}/site-start.el`" ]; then 
	    ${SED} -e "/^${OptionStart}/,/^${OptionEnd}/d" \
	    ${sitestartdir}/site-start.el > ${sitestartdir}/site-start.el.bak
	    ${CP} ${sitestartdir}/site-start.el.bak ${sitestartdir}/site-start.el
	    ${ECHO} "Adding entry for \"${pkgname}\" to ${sitestartdir}/site-start.el"
	    ${ECHO} "${OptionStart}" >> ${sitestartdir}/site-start.el
	    /usr/bin/printf "%ADDSITESTART%" | \
		${SED} "s/^ //" >> ${sitestartdir}/site-start.el
	    ${ECHO} "${OptionEnd}" >> ${sitestartdir}/site-start.el
	fi
	exit 0
else
	exit 0
fi